Well NormK, the tap was in the off position so there is hope. I notice when I hand spin the motor, I can hear bearing noise and can feel them grinding a bit too.
Should this motor run, I think I'll have to remove it for storage as the base is very worn with a lot of play in the front axle and catchers for these are harder to obtain than the thumb latch series. I was thinking of transferring this carburettor over to a VC 160 of mine that is having carburettor issues.
Converse, I actually let off a giant sigh when I spotted the Celestial as I stressed over having to load TWO mowers into my small sedan, how to pull off safely on this very busy winding two lane road to load them up and whether I'd even get them! Another case of mowers finding me.