I 'll say thanks......but do you really know everything.
Oh God no . . . please, I didn't mean to offend.
In my experience two extremely important pieces of information in problem diagnosis are "Did this thing ever work correctly?" and "Can this thing work correctly as designed?". And when I work on equipment and installations that are both one-of-a-kind and, to a certain extent, unconventional . . . I always have to keep these these questions squarely in mind.
I was just trying to suggest some methods for you to do the same.