The light issue is with the left bumper and when the ball runs over the left lane switch above the bumpers it should light this left bumper but on occasion (approximately 50% of the time) it fires the right bumper. Not the light but the bumper, which obviously shouldn't happen regardless of which rollover it hits. Pretty weird really.

It can only happen if there is some common grounding... your path of electricity will go where there is the lesser resistance... sounds to me that these 2 are grounded together somewhere and the power will travel down either