Pick up some LAW. Ive found that even small amounts of normal lube can cause sluggish operation or FTFs in really cold weather. LAW will help solve that problem.
Thanks. The gun is actually fine, now. I just LIGHTLY coated all the bolt parts with Gunzilla (on a Q-tip) before reassembling. There is a HUGE difference, even with the gun at room temperature. The click is something with which to be reckoned.