Protecting "contact" areas on brass

[Green_Elite_Cab]

Once again, my E44As are giving me headaches!

The problem I'm having now is that one of my E44s actually shorts out every time it hits a curve. I think the trucks are touching somewhere, I'm guessing its hitting the frame, based on the rubbed away paint. That said, the frame is insulated from the trucks for the most part, and they'd BOTH have to be touching in order for it to short (which would make sense on a curve). I figured i could repaint the frame and truck side frames, but this would be temporary since it would just wear the paint away again wherever these parts touch. I've also thought about putting styrene sheet over all the rubbing spots in the frame, but i only did this in one spot before i grew concerned it might be getting in the way (its REALLY thin, but still). I'll try scotch tape next, just as a temporary thing (that should keep the parts from touching.

I was really hoping i could get All three to run for my club's open house, and they need the horsepower to pull a good train, since i can only add so much more weight.

Any suggestions/thoughts?