The bow has now managed to break two sights. The first was a Tru-Glo Brite Site Xtreme, the second a Copper John Dead Nuts. Original problem : mounting arm screws would come loose Original solution : Loctite the screws New Problem : sight mounting arm develops cracks The Tru-Glo was in pieces after about 100 shots. The Copper John cracked after a few hundred shots. So far it's non fatal (after around 600 shots), but it's fretting like mad (prolific aluminum dust around the crack line.) I have a new High Country Archery Maveric model hunting bow. It's a 70# DW on a 32" DL (and with a 78 inch arm span I'd buy a longer draw if I could find it.) Arrows are carbon express cx 400's with a 90 grain field point. I'm shooting relaese off a string loop. The only thing I've added to the bow is a Doinker A-bomb 7" hunter extreme stabilizer. An oh, today the string has started to badly fray above the top serving and the guide bar has backed 3/8" out of the riser (yet the string guides still move freely on the bar.) What in tarnation am I doing wrong??