It's nice "meeting" you Pete. Rondout Valley has some beautiful country... how far are you from Minnewaska? Once we get into leaf-dropping time and I do my fall pruning, I'll let you know what cuttings might be available to trade some with you.
As for culture differences... yeah... lots of impact. I'm becoming convinced that splitting (or not) is one of the characteristics that is heavily affected by culture. And ability to hold the fruit until ripening versus dropping them, seems heavily influenced by culture too. In one of the varieties I have, I've got two trees that are clones from the same branch of the same mother, living in identical pots right next to each other through the summer. But they're in different soil... one in promix with a few things added, and the other in native soil. (I ran out of promix when I potted them). Both trees are thriving, and both made figs this year, but one of them held the figs to ripen and the other dropped them all. The dynamics, mechanics, and chemistry that's involved in how the roots regulate water management and nutrient uptake... it's just a huge impact for these potted trees. I wouldn't be surprised if that sort of thing explains why some people say that Celeste splits and drops fruit, yet other people report no problem at all with that. It could be genetic differences in their strains of Celeste, but from what I've seen it could just as easily be culture variations, maybe even more likely. Variations in culture just seem huge.
Talk with you later.
Mike central NY state, zone 5