Luckily I have not had that issue. I had an 8 track hooked up for a while until I realized I was bored with most every genre of music aside from a well tuned v8. As far as tension is conceened, I'd like a repeatable, affordable method of checking belt tension.
Are you not having slipping issues with the 95amp or the 165amp?, I am running the 165amp on mine. Agree on the belt tension, of course I think the quality of belts (and most all rubber products) now days are crap lol.