Question I have is which bolt to run a wire from on the Amp to the Ground Lug. I really don't like having the cheater on it at the moment either...

I know most are going to say put a filter on the cable system, but that's not the issue. Believe me, I have put time into diagnosing the issue. The issue is either the APC Smart UPS battery backup on a portion of the system (TV, 990, DVD, Cable box, Sat box... it's not on the Amp) or the Amp itself. I'm going to try removing the battery backup as soon as I get back home...