On the fairchild webpage, they said to keep leaves on scion if I'm not mistaken...I think they put theirs in a mist bed, or bagged em.
I wonder how the success rate varies, with usage of buddy tape, vs. parafliming, or bagging.
Having a mist bed wouldn't hurt either. You could get away with no bags or wraps over scion that way. If I keep getting failures with the way I've been doing it, I may change up my stylisitics.