After about 6000 rds through my G31 I began to have feeding problems. It appears that the round (both FMJ/HP) would nose into the feed ramp and create a malfunction (FTF). I thought that the mag springs had got tired and the slide was moving too fast to fully pickup the round from the mag to correctly feed the round; So I changed Magazine spring to Wolf, still had the same problem. Then change the recoil spring (harrts recoil guide rod and factory wt 17lbs spring) still same problem. Now I have changed to a 19lbs and have seemed to have solved the problem.....good to go for the last 200 rounds without a malfunction.... Anyone else have a similar problem...if so how did you correct it?