Just got a new cage and I have never tried chastity before. I'm uncut and have considerable amount of foreskin. Guys with foreskin, do you retract it full when you cage your cock?
I'm uncut as well and I've tried both ways. For me it's more comfortable if I don't retract it. I've found it easier to keep it clean if I retract the foreskin, but I'm allowed to unlock it every so often to do a proper cleaning so while it's not a worry for me, it might be something you want to take into account.