Back to the measurements.
Lay shaft next.
My method was to fit the shims that I had to the front casing cover and then refit the bearing cups in the front part of the main casing.
I temporarily screwed the front cover in place.
I then temporarily fitted the lay shaft and intermediate plate and measured the clearance / end float directly.
Be sure to clamp the intermediate plate in place you are looking for a clearance of 0.05mm
Mine is a bit out. It has a clearance of 0.16mm so I need to add in a 0.1 mm shim under the bearing cup. (This makes me wonder if I've lost a shim of course)
So off to the dealer I go - further rebuilding work delayed until next week!
Note - a magnetic base doesn't work on an aluminium alloy casting - hold it tight and be careful - make sure you get a good measurement.