I see it now, I did not have that mounting base. Looking at the impressions on that insulator it was in contact with the motor.
I felt it was too tight to the driveshaft and would be super noisey solidly mounted . So I installed a 1"+ thick rubber spacer. So spacing it seems very critical.
I guess I will use the insulator as a template and fab something simple, The mounting stud length should give me a clue to thickness. Unless someone has a thickness measurement or has one collecting dust
Likely removed and discarded (Why can't kids put things back where they belong?? 😁)
Sheesh,, (thefirstdomino)
Jerry