I took off my clip, got a good tip here use a towel and slide it between the clip and the body all the way up and while holding the towel and clip together give it a tug. It will come off easily and not scratch the body. Anyway, back to my question how do you screw the head back on without distorting the o-ring. Every time I try, slow, fast, wet, dry, even trying to hold it in place the o-ring starts to bunch up in the gap where the clip was.