I had the same problem with my new G2 SS frame, just like Greybeard. I bought a new custom shop SS barrel, and the hammer would only cock about halfway, not enough to full cock the hammer. I have several barrels, so tried several ones and it seemed to cock OK then. Put the custom shop barrel on and "slammed" the barrel closed and seemed to help. After about doing this about 100 times, it seems to be locking up OK and cocking every time. I have not had the opportunity to shoot this rig yet, so that's the next test. If anyone has further suggestions how to correct this, please share!
Snowbelt45