FINALLY I got a persimmon graft to take! Thanks to everyone for tips. Before this I was lifetime zero for about 19 tries over 20 years. So now I’m 1 for 20, batting .050.
Chocolate (Asian) on native rootstock. There are 20 year old roots under this rootstock so graft should take off like a rocket.
One take is all I need to build a new tree that will pollinate my old Giboshi and San Pedro and hopefully improve bearing and taste.