The scions from the China plants that I grafted onto Myrica californica have officially surpassed the plants we imported from China. They are much more vigorous, and appear to be healthier. I'm thinking that I have gotten about a 60% take rate on scions but still gonna hold out. Some of them have a good couple inches of growth so I'd Imagine those are takes. Others flushed, died back and are flushing again, making me think they were growing on stored energy but have now officially taken.
Note to future purchasers. Graft immediately onto new rootstocks. I grafted a couple weeks after the plants arrived and the plants started to show signs of pushing buds. Most of the buds held and pushed, some pushed and withered but are coming back for a second push.