I started a thread over in the Repair forum, on my attempts to repair a badly damaged Keithley 225 precision current source. I know several of the folks here, including Dave, own one of these, but so far I've received a grand total of zero help on my questions.
In case folks have something to offer there, here is the thread:
https://www.eevblog.com/forum/repair/keithley-225-(current-source)-repair/Thanks