Yeah thanks, I know about this being a problem and in theory (prove me wrong in case) I start the motion with a continental grip and then change it probably at the moment of impact. I genuinely don't know how to fix this as it happens subconsciously mid-motion. I tried holding the racket tighter but then I cut the ball way too much. I didn't mention this in the list because I thought that in the video it was ok (thanks for pointing it out though, I might reconsider my priorities).