Anyone have issues with the plastic back strap retainer breaking on any of the FNX pistols? I pulled mine out for a clean and lube and when I went to re-insert the mag after I was done, the back strap slide down the frame about 3/4" as I seated the mag(it always had that 1/32" or so gap that many people complain about but it has never cause me any issues other than being annoying). So long story short, I slide the back strap back into place only to find the retainer will no longer hold it there. After a quick inspection I found it is broke and I'm really hoping this is a warranty fix as it appears to me the frame would need to be swapped out. I probably don't have 250 rounds through this thing and while its been great this is just a smidge disappointing.