To the OP: absolutely yes. I was death-gripping the handlebar for some reason, and my overall position was a bit off as well. Made a few adjustments and, mostly reminded my brain to monitor my bad habit better. Not only did the pain go away, but I also found my whole body loosening up and the feel of the whole experience improved. Doing other things, like playing or physical tasks, that involve some of the same muscles no longer bugged me, and my hands no longer tightened up when playing. I hope you find something similarly simple to correct. It was quite a relief.