I agree with Sandy, Pyrocat HD is a very versatile formula but you have to do some testing. I use KOH 10%as the activator ( is all I got, hard to get stuff here in Mx) and if I use the usual 1:2:100 formula I get negatives that are hard to print even on pt/pd. My usual ratio is 1:1.5:100, and I can get easily expansion equivalent to N+3.

Maybe your solutions (mainly A) was too old, or you messed up at exposure time.

Another thing, a higher temperature for expansion would have been recommended. I use it a 75 and if you use it at 78 you can get extreme contrasts (yep, I messed up and got eclipse viewing negatives)

Waste a few sheets and do some testing, or better yet do a full test program.