My cuttings of Bronx White have rooted, but with that they have a whole new problem. It seems I can't escape mold this season. Nearly all my cuttings of some degree of mold on them, they are in Spaghnam Moss.  How can I get rid of the mold without damaging the cuttings? Would Physian 20 work?

Should i change it into new Spagham Moss?

Can you post a pic? Mold that is growing on dead leaf parts and sap residue on the bark is nothing to worry about. If it is bursting out of the cuttings in any way or causing damage to the cambium (which makes the bark slip away) then it is action time.

I had very few fungi problems this year and I think it was because I had the sphagnum drier and kept them at around 70 f instead of 75-85.

I move my cuttings to cups as soon as I see roots, even if they are only just making bumps in the bark, and always before they are longer than an inch or 2.