Joe:
I just followed what you told me.
Here's a sample of my green gage I grafted to my santa rosa plum on Jan 29 2007.
I was surprised how fast they grew.
When I grafted them all were dormant.
I could see the otherplums that we got from the scion exchange at varying size of growth.
I will have all kinds of varieties of plums in that tree I tell you!
I also started doing bark graft to my fuyu pesimmons of different kinds of persimmons. I'd try a few just in case it take but I'd keep on grafting a few until the new buds come out.