Sorry if that didn't fix your problem. There are about eight Tron:LE's in the north Texas area and one of the first guys to get his posted about the problem and the solution, I think someone on RGP told him. I got my game a few days later and with all the problems I was seeing reported here and RGP I was prepared for the worst. After playing a dozen or so games it became obvious what lights should be on or off, so that's when I could tell I was having the interference problem. All I did was snip the one zip tie and pull the wire loom loose so it could hang free.
If you have the main wires free and are still having a problem you should call Stern. Since these led boards are still new to them there could be something else causing a problem. I'm still on the fence about calling them concerning the chrome side rails and the chrome that is coming off of them. I'll give it another week or so and see how it looks.
Good luck and let us know what happens.