Hello Coach Herman,
Thank you for suggestions on drills. You mentioned Serena drill for warm up, so I did do it for warm up but I did not actually record. I did record service box drill and racket face closed drills. For both drills, I drop feed myself, and it saw something crazy…with service box angle drill, I did not notice anything crazy. But when I saw racket face closed drill especially side views, I did see I swing racket up with string and palm up…at some point, I remembered Jeff saying butt cap facing toward the net so I started to be more conscious about it and I started to see racket face was closed better. recording of this from back is after side view. so when you see racket face closed drill from back, my racket face looks more closed. I must naturally swing like this with palm up after contact since these balls does not have much spin, nor speed, nor they are not jamming me…I probably hit racket face closed about half of the Time but I probably hit with palm up after contact the rest of half of the time….this looks crazy, but this may explain why I often feel so uncomfortable hitting forehand shot…Please see attached videos and thank you so much for reply
Chiharu