No I get it.
Just for start I'll try less movement with body and more with arm so I'll see where it would get me.
I will continue this conversation (about my other shots), but got no time right now, some student obligations are in process. :P
Although I just wanna mention up, that I use continental grip in slice shots, maybe in that shot in video it can't be seen, but I'm using it, for sure.
And yes, please send me that email, I'm interested in what you got to say, thx.