Congrats, 500 more posts to go, to become a Headphoneus Supremus . Me too a 1000+ member...but I think I'll join the Headphoneus Supremus club much later as I'm quite slow in posting.
Get some good resistance and voltage measurements on your cracka2a, and ask Paul & Paul on the BHC forum, they are normally super helpful in building the BH kits.
I’ve been going that route for the last week plus. Unfortunately there’s not a clear idea of what to work on, other than rewire and resolder Pretty much everything, so that’s the feedback I’ve been getting. I’ve been doing that for a long while and its Not fixing the issues. In fact, tonight was the last straw, as I worked on the low current board only to have two additional led stop working.