Following up one last time, I was trying the above on my KSDS-infected stocks (five total) and it looks like all are sensitive. The first round they all sprouted and then failed on one very infected stock, and I re-grafted all on three other infected stocks and they sprouted but failed again. I still have Chuchupaka and Kasandra alive grafted on my supposed JT-02 on a KSDS-infected stock but they are stalling now so its not clear if they will make it. Maybe the JT-02 interstem is helping some though, they are at least doing better than the ones directly on KSDS-infected virginiana stocks. It would be really nice if an interstem could make things work.