Thanks again, that wheel looks very similar to the double wheel low profile 01PO20AB8191YY from CasterCity.
I wasn't really looking for a project or to "reinvent the wheel" (pun intended), but that's what I got. I just wanted to complete the Mark VII with the correct equipment. Somehow the caster assembly I purchased have the wrong wheels. For now I am using the foot lever, rod and cams with my homemade design for the wheel mounting, here: viewtopic.php?f=10&t=25392&p=283521#p283521 which works somewhat, but not as well as it did with my wood lever and blocking device which held the wheel much more rigid. I can always go back to that if I have to. I think if I can re-drill the axle location and move the wheel over closer to the stem centerline some they could work, but that isn't my first choice. I will send some emails and see what they say.
I remember thinking (a year ago), if I can just get this motor working again I will be satisfied", ha ha