the real problem is the thin plastic really, esp. the sloped part where most of the cracks occur. but i don't think we're going to get any solution other than the smooth pins.
also, on my v.2 VF-1s with knurled pins, the pin moves/rotates when i move the shoulder... it doesn't on my VF-1S Max, VF-1J M&M, VE-1 and hopefully on my armored VF-1J when i finally get it.