Been reading alot about "out gassing", where the frames of the older Glocks were literally drying out and cracking. Also kind of scared of having only 1 pin for the locking block. I want you G17 gen 1 and 2 owners that have a ton of rounds down range to chime in, and tell me your round counts. Anyone have any problems with locking blocks or brittle frames? Are these pistols as bullet proof as the newer models?