Range day and my Kimber Pro Raptor II pooped out on me. Recoil spring issue. I purchased it new in December 2011 and proudly it fed thru over 1200 rounds, but now noticeably, it almost slides forward 98% and I have to push it the final 2. AFTER each shot almost. I know the manual says to replace the spring around 800 rounds and it's an easy fix, but I'm curious...does anyone else have a 4 inch 1911 (any brand other than Kimber) that doesn't need to be changed out as often? I have a 5 inch 1911 by RIA that has well over 2-3k rounds but haven't changed it yet nor had an issue. Thanks all.