Darryl. Just an observation regarding the objects.
There is some corruption with the 4 group objects, (4 nuts). if you select one of the group nuts, you get a huge bounding box, it one explodes the group it vanishes. If one moves one of the groups just a little bit, the group moves itself a long way off, and re-sizes to 22 ft, ( that's a big nut
). I'd suggest deleting the 4 groups and copying the ones from the opposite end of the rods, which are blocks.
I don't know if its just on my computer but. The attached is what I see. I dragged a selection window around all the motor, and moved the motor a little to the right.