Maybe recreate your preset from scratch, without copying anything from anywhere, and without worrying about block settings, just the structure. If that works, replace each block, one at a time, with a copy of the same one in your broken preset, and test after each step. That might help you zero in on what's wrong.
Just to say it, that kind of detective work is rarely needed, in fact I've never done it. But IF something is screwy, and you care about the preset, going through that might help.
