Nix the below. The spur gear had a step-up adapter attached, which I mistook as an integral element. The gear fits perfectly.
The worm shaft OD measures 5.969mm.
The ID of the attachable spur gear, which replaces the slow-mo cable, measures 7.545mm
A sleeve could be machined, but other problems might lurk.
The contents of the new-in-box MMD-III were not intended for this scope. How many things would have to be remedied? Conceivably, I could have a sleeve machined, only to find that the gear ratio is incorrect.
???
Edited by rmorein, 01 February 2025 - 05:58 PM.