I've been playing for many years. Recently, I have experienced something new, in that my fretting pinky finger kind of locks into the L position. To straighten it I have to exert harder and then it snaps into a straight position. There's no pain but its obviously not good for smooth transitions in chord changes. I have been playing alot lately ; 2- 3 hours a day. Maybe I need to give it a rest ? Anybody out there experiencing something similar ?