You're doing the right thing NG
Engineers or long-time wrenchies are two reliable sources I go to when it comes to system design questions, particularly now in the era of dumbed-down manuals and need-to-know training philosophy. Our outfit is fairly small and the flight training department consists of a gal that arranges for outside training/currency checks in her spare time!
Favor? Would you mind passing the word when you have an answer you like? I am curious what the story is if different than offered here. Cheers!