Hi David
No, the printer did not come to ready.
The motors operated but nothing turned.
But wait .....
I have used furry (not prickly) side velcro glued with impact adhesive. I chose this side because when I laid a level on a sample of both, the furry soft side was very slightly thinner.
Put it all back together and it works!!! Drum rotates smoothly, warm up completes, ready light glows and config/status and real file pages print.
The only differences were:
1/ Using velcro as opposed to under chair pad or foam. The differences in thicknesses were small (<1mm) but may have been critical. My original worn pad seemed ok but was very thin <1mm and the first felt I tried was thicker. The foam was between the two but as, I said, even lifting the 'L' arm with a screwdriver failed to permit a free complete rotation without snagging when each toner passed the top.
2/ When re-attaching the solenoid, although it has a hole and not a slot, which implies a fixed position, there is some small movement and so I tightened it at the limit of upward movement in the hole such that the arm had a miniscule less distance to be pulled up by the solenoid to free the carousel.
3/ I cleaned all the excess toner off from everywhere.
I am indebted to you for your advice, patience and solution.
I have lost 100+ pages of each toner but problem solved.