Getting ready to (possibly) get into modifying a 3990 myself, and I come here in search of information.
Have you gotten the last issue resolved and if so, what was the solution.
Just beginning this adventure and after reading through your thread, I may be entering a rabbit hole I cannot climb out of. LOL
I mean one user here already has me looking at a larger machine, but I have to be realistic in my budget. ( 2,000 USD )
Thanks