Thanks for the concern Joe, my other rest (Quicktune 800) was set at the "high" setting, and if I look at it I guess the tips of the rest would have been at the top of the berger button holes. This is my 1st bow, I guess the string is about 4yrs old, but I haven't shot alot untill the last 2yrs, and I wax it often. I do clip my release directly to the string. I haven't noticed a trend of having to adjust my sights in one direction, but I probably wouldn't have noticed that because I'm always changing the distances that my pins are set for. When I removed my upper knocks (2 small ones) everything looked fine, but the serving did look compressed beneath the lower knock (1 large one).
So, how dangerous is a string breaking at full draw, both to myself and my bow? I guess I could measure from axle to axle, shot a few sessions, then measure again to see if it is stretching.