Hey Mike,
Sorry for the delay in answering. I’ve been laid up for a while. I’m not familiar with the cheese type you have made. Nor am I familiar with “plyban.” Is this your follower? Sounds like your final press is without a cheese cloth (I do that too). I have had trouble with it sticking, so now I coat the follower with olive oil at the final press. No more sticking.
As to the cracking in brine - I’ve never experienced that. What is your salt concentration?
I don’t recommend cheese wax. I’ve been vacuum sealing for a few years and I won’t go back to wax. It’s a far superior method IMHO.