Lionel Milwaukee Road BiPolar intermittent short

My Lionel MR BiPolar E-3 (#1933573), had a problem stopping going through Ross switches. No other engine, from Big Boy to NW2 switcher, has ever shown this problem. I did a lot of work trying to figure out what was happening, all manner of track cleaning, wheel cleaning, pick up roller functions, and more. Yesterday as I was once again working on this problem, knowing from past work that the engine always died at the same place on one particular switch, that it was the swaying motion of the center cab versus the two end cab sections was causing the problem. So I took a few pics as best I could of the wiring between cab sections, and believe there is a high possibility that an intermittent short was possible.

Since this is the only BiPolar I own, I am asking if the wire routing looks out of place as it does to me. I have never removed the cab sections from a BiPolar, but it looks like each section is held on by 4 screws.

I believe the fourth pic shows most likely problem area, as wires may actually be touching top of one of the drive wheels. But the location of all the wiring runs don't look correct to me

Thanks in advance for your help!!!!