In my ARs, the issue manifested when the guns all began to short stroke. Pulled the BCG and they were literally sticky. I stripped the FL off and the guns were 100% again.see when I FL my rifles, Ive always put on a somewhat heavy coat and let the parts sit for a few. After 10-15 min, I wipe away majority of the excess and reassemble the rifle. Never had any issues in the summer but, Im curious to see what happens here when its starts getting pretty cold. Then again, its on my AK so its not like anything could really happen, its not like its an AR