Thanks again guys for all your help.

1. Carrier is MP alum 742
2. When problem first was noticed wheels were all on the ground, when raised, the rear jack stands are under the housing near the leafs, ie not hanging, but at ride height.
3. I will try tonight with a helper to hand turn a spare yoke with clutch depressed.
4. yoke bottoming does not seem likely
5. Original yoke slipped out when dropping DS with no issues
6. I don't know enough about 833 internals to reply on whether a gear has frozen to a shaft.

We will try again tonight.

Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.