I think relaxing my strong hand grip would help to solve this problem theoretically but that's another aspect that I have been struggling with.
I suppose what I really need to do is, like you said Lastcat, is start from the basics and rebuild it from the groun up doing it correctly. That podcast episode by Kim was great as well as the one with Eric Grauffel (spelling?). I also had listened to the shoot fast podcast where Joel Park has talked about having to relax his strong hand as he was having the same issue. I was wondering if there were other ways to potentially train it out without starting from the ground up, but it seems not.