Good Day, I have a new G21 SF. First thing I noticed was that when I disassembled it, the recoil spring was not in the perch on the barrel. Every time I have taken it to the range, I have about 45% failure to go to full battery. I have to hit the back of the slide to get it to lock. Also, every time I have inspected it, the recoil spring is just kinda sitting there with no tension on the barrel as it is not setting in the perch/groove of the barrel. I an thinking that with this happening with the barrel/recoil spring, it dos not want to go to full lock up but I'm not sure why. None of my previous Glocks had a recoil spring that was not under some tension, but my also ne G36 does the same thing but it locks the slide fwd... So, is this normal or do I have a problem? As a a note, I have always installed Wolff guide rods and springs eventually. I even commented at the range that I just need a 20# spring for it to run right. Thanks for any help.