Drag race bus wont shift out of 1st gear (devs needed)

i don't know much about engine setup for BeamNG

I cant get my drag race bus to switch out of first gear with the automatic drag transmission, I cant figure it out because I have very limited knowledge about the physics of engines and transmissions, if someone can make sense of the code big thanks!

Here is the code for the V12 Drag Engine and Supercharger

Part of the Drag Engine Jbeam

Code:

{
"semi_engine_new": {
    "information":{
        "authors":"BeamNG",
        "name":"V12 Drag Race Engine 2",
        "value":6000,
    },
    "slotType" : "semi_engine",
    "slots": [
        ["type", "default", "description"]
        //engine
        ["semi_transmission","semi_transmission_new", "Transmission"],
        ["flatbus_turbo_drag","flatbus_supercharger", "Turbocharger"],
        ["semi_drag_exhaust","semi_drag_exhaust", "Exhaust"],
        ["n2o_system","", "Nitrous Oxide System"],
        ["semi_engine_internals","semi_engine_internals", "Engine Long Block",{"coreSlot":true}],
        ["semi_engine_ecu","semi_engine_ecu", "Engine Management"],
    ],
    "powertrain" : [
        ["type", "name", "inputName", "inputIndex"],
        ["combustionEngine", "mainEngine", "dummy", 0],
    ],
    "mainEngine":{
        "torque":[
            ["rpm", "torque"]
            
            [0,    0],
            [200,  940],
            [500,  1044],
            [750,  1318],
            [1000, 1555],
            [1200, 1660],
            [1500, 1850],
            [1800, 1818],
            [2200, 1686],
            [2500, 1556],
            [3000, 1320],
            [3350, 915],
            
        ],

        "idleRPM":1200,
        "maxRPM":3350,
        "revLimiterType":"soft"
        "inertia":40,
        "friction":5,
        "idleRPMRoughness":20,
        "dynamicFriction":12,
        //"burnEfficiency":0.35
        "burnEfficiency":[
            [0,   0.20],
            [0.1, 0.25],
            [0.3, 0.32],
            [0.4, 0.46],
            [0.7, 0.44],
            [1,   0.42],
        ],
        "torqueReactionNodes:":["en4l","en3l","en1r"]
        "particulates":0.2
        "energyStorage": "mainTank",
        "requiredEnergyType":"diesel",

        //cooling and oil system
        "thermalsEnabled":true
        "engineBlockMaterial":"iron"
        "oilVolume":15
        //engine durability
        "cylinderWallTemperatureDamageThreshold":36000000
        "headGasketDamageThreshold":350000000
        "pistonRingDamageThreshold":350000000
        "connectingRodDamageThreshold":3500000000
        //node beam interface
        "waterDamage": {"[engineGroup]:":["semi_engine_intake"]}
        "radiator": {"[engineGroup]:":["semi_radiator"]}
        "engineBlock": {"[engineGroup]:":["semi_engine_block"]}
        "breakTriggerBeam":"engine",
        "soundConfig": "soundConfig",
        "soundConfigExhaust": "soundConfigExhaust",

        //starter motor
        "starterSample":"event:>Engine>Starter>i6diesel_semi_eng",
        "starterVolume":0.67,
        "starterThrottleKillTime":1.2,
        "idleRPMStartRate":2,
        "idleRPMStartCoef":0.8,

Part of the Supercharger Code

Code:

},
"flatbus_supercharger": {
    "information":{
        "authors":"BeamNG",
        "name":"Supercharger Stage 5",
        "value":2600,
    }
    "slotType" : "flatbus_turbo_drag",
    "supercharger": {
        "whineLoopEvent": "event:>Vehicle>Forced_Induction>Supercharger_02>supercharger"
        //"whineLoopEvent": "event:>Vehicle>Forced_Induction>Supercharger_01>supercharger"
        "whineVolumePerPSI": 0.02
        "whinePitchPer10kRPM": 1.65

        "gearRatio":1.65,
        "clutchEngageRPM":0,
        "pressureRatePSI":250,
        "pressurePSIPer1kRPM":40.1,
        "crankLossPer1kRPM":0.025,
        "type":"roots",
        "lobes":8,
        "twistedLobes":true,
        
        "boostController":[
            //throttle in %, factor
            [0,     0.8],
            [100,     2],
        ],
    },
    "mainEngine": {
        //supercharger name
        "supercharger":"supercharger",
        "$*instantAfterFireCoef": 6,
        "$*sustainedAfterFireCoef": 6,
    },
    "soundConfig": {
        "$+maxLoadMix": 0.9,
        "$+intakeMuffling":-0.0,
        "$+mainGain":1,
    },
    "vehicleController": {
        "revMatchThrottle":0.3,

Here is part of the transmission code

Code:

}
"flatbus_transmission_drag2": {
    "information":{
        "authors":"Dudeman",
        "name":"Drag 4-Speed Automatic",
    }
    "slotType" : "semi_transmission",
    "powertrain" : [
        ["type", "name", "inputName", "inputIndex"],
        ["torqueConverter", "torqueConverter", "mainEngine", 1],
        ["automaticGearbox", "gearbox", "torqueConverter", 1],
    ],
    "gearbox": {
        "gearRatios":[-4.05, -5.03, 0, 10.45, 2.25, 1.41, 1.00]
        "parkLockTorque":25000,
        "oneWayViscousCoef":10,
        "friction": 10,
    },
    "torqueConverter": {
        "converterDiameter": 0.425,
        "converterStiffness":5,
        "couplingAVRatio":0.90,
        "stallTorqueRatio":1.96,
        "lockupClutchTorque":500,
    },
    "vehicleController": {
        "automaticModes":"PRNDM",
        "transmissionGearChangeDelay":0.5,
        "transmissionShiftDelay":0.5,
        //"shiftDownRPMOffsetCoef":0.6,
        "calculateOptimalLoadShiftPoints": true
        "lowShiftDownRPM":[500,0,0,0,500,700,700,700,700,700,700,700,700]
        "lowShiftUpRPM":1200,
        "highShiftUpRPM":1600,
        "highShiftDownRPM":[500,0,0,0,500,1000,1000,1000,1000,1000,1000,1000,1000]
        "wheelSlipUpThreshold":5,

 

make sure your torque converter doesn't stall too high. also make sure it is set to shift before/at redline (not a further RPM). that's really all i can say. does it work in manual mode?

also, make sure your "highShiftDownRPM" isn't at/higher than the RPM your engine is at after it makes the 1-2 shift (if it revs to 1600, shifts and ends up at 900, it will downshift again because your highShiftDownRPM is over 900.)