I am currently having a problem with the arch rotating 360 degrees w/o stopping. Sometimes it will stop at one prox but not too often. I checked the proxes and they are all lighting. I cleaned the cams and prox heads. The cords seem OK but to have all the cords or proxes go at the same time wouldn't be logical.This happened about a year or two ago also and I replaced all the proxes but still had the problem and don't remember what I did to fix it. Any ideas?