I should really stick to jbeam. Mesh/texture help wanted

So, making an uber yolo swag tuner covet, blender derps while editing the mesh, few faces derp their shading out, i delete faces (bad idea, i now know) and slap on some faces in their place, and i export it, and lookie there, the faces i changed have gotten addicted to heroin, and their textures spazzed out.

This is what it currently looks like



I need to know how to remap(?) those faces to the proper spots of the texture, and then i well be pleased and be doing many a peg leg burnout.

Thanks for your tech wizardry, guys!

 

I've had the same thing happen and I couldn't figure it out. I hope someone here knows what's going on.