Well, I found part of my problem anyway. The two solid-state relays that I was looking for are apparently on a relay board "1100-1" located in a side electrical cabinet, not on the "1100-2" relay board in the rear cabinet. (Hey, I'm a rookie with Fadal's !!!)
I've ordered new relays from Fadal CNC and should have them in a day or so.
Can any Fadal-guru either confirm my idea that one or both of these relays is faulty or is there a better idea of what's causing our regulator to "pulse".
Any help will be appreciated.