@ Alan.
You think Carpathian would even make it in Z6? Not that I wouldn't be open to giving it a try. Maybe someone else with some extra material will help me out this season anyway. But thank you of course.
My plan is to graft onto some black walnut seedling rootstocks I started about 3 yrs ago.
@ Phil. Thank you for your kind offer. Yes, I did receive a good number of varieties from you previously. Pretty sure I got several of those to take (pluot, peach, & nectarine I think. But no plums yet). Sadly, I left many of those scion in the fridge until well past my spring grafting window. Then I plain forgot about them in July-Aug when I might have tried some chip budding. I still have those in the fridge but not sure if they'd still be viable. Should check on them again anyway.
Aside from just having some nice stone fruits in my orchard, my eventual goal is to do a couple super multi-grafts. I'd like to see just how many different types I can get going on one tree. Just for fun mainly but should make a very interesting specimen as an experiment, a conversation piece, as well as the fact that it should prove to be quite a site - especially in the spring.
If you don't mind Phil, I would like to see a list of what you have. Very much appreciated.