Hi deejayspins, glad to hear you got the ground problem sorted.
I have not been here for a couple of weeks for tech support but Val's getting pretty good at email tech support at the SuperPID.com web site, and directs much of that to my email also.
Thanks too to all the SuperPID user base for helping out here in my absence!
To ATRepair, thanks for posting the diagram. The opto sensor number was posted earlier in this thread but is hard to find, also the pinout was in the SuperPID v1 instructions and had been discussed earlier in the thread too with a diagram. Anyway it's good to bring stuff forward from time to time and like you said may be of benefit to other users.