Hey mike , you know i follow you and support you from the beginning!
As i told you in youtube , i think its 3-4'' off.
I remember you were 7'11'' like me , so 10'8'' = 33''. Give 1 inch for reach and 1 inch for getting a bit more than touching it , max 35'' if you ask me.
Think of it that way: if you were 37''/7'11'' you would be able to touch a 10'' rim 4'' below your wrist from SVJ.
I dont trust jumpmats and hangtimes etc , they give a good estimation but the only legit method is [highest touch - standing reach]
Btw , legit 33+ is still awesome for SVJ , your progress is amazing , keep it up!