Have a relatively new SC and have found that it does not always feed reliably. Ejects fine and starts to feed ok but the round hangs up and the slide does not return to full battery. Often a smack to the back of the slide fixes it but that is not acceptable for a carry weapon. Happens with ball and JHP. Feedramp already looks nice and polished from the factory, anyone make a stronger spring assembly? Would a bit more polishing help, anyone else have this problem?