Your right about "Haunted House" being haunted! I only know of one tried and true method of banishing those ghosts... and thats GROUNDING!

I can't remember where I found the guide years ago online. But at the end of the grounding process, it looks like a spider's web! BUT IT WORKS! This sends all the spooks into the ground, where they belong.

Wow! I'm going with an entire halloween theme here! Hope that helps.

-Aaron
Iowa's social pinball society

ps. No guarantees that this will fix your problem (I think there is a short). Only give you a better starting point.