Great success experienced by Mahindra and Barndog. So no common denominator yet. Mine came from Cummins last year. But some of my issues were: 1st time grafter, felt I may have over watered my resting grafts, found a few Jap grubs on roots of deceased rootstocks, used city water, healed in miracle-gro potting soil, fruit in same fridge as my stored scions. Not sure if all or any of that mattered. Goal is to get called up from the grafting tee-ball team to instructional league next week...