Confused Grip

It blows my mind to 'finally' see inside my pick technique. I've just received my 1st magnet and already feel like I've learned a lot. I'm a 64yr old 'has-been' still trying to get my right hand fixed BEFORE I go knocking on Heaven's Door. I positioned my grip in various styles because I'm still wrestling with what feels most comfortable and ergonimic. I've recently discovered the EVH 3 finger grip works an absolute treat for 'rhythm' playing, and I'm in the process of trying to re-program my action. However, even though this feels very natural for strumming, when picking, it still feels kinda comfortable, but erratic in terms of accuracy. I still don't quite know which direction I should be focused on, because my other grip has developed into a smoother tremelo.