Glad it worked out.
My old adjuster on that pictured LCA came out with a ratchet after I lubed them with Justice Brothers JB-80 penetrant lube. Then I used my recently purchased thread clean-up set to get the dirt out and straighten out the threads. Those are not meant to cut threads, just clean them without wearing/cutting the threads. Works awesome for a 48 piece $65 complete set.
Now with more JB-80 on the threads, the adjuster turns with my fingers!