Got the clutch handle adjustment sorted. Fork nicely vertical and ready for fine tuning.
From those other threads you posted, I figured my cork clutch clutch lining was worn out, seeing that my newly painted red cone stuck out over 5mm.
All glazed up and quite thin.
New cork clutch lining ready to glue in. Just used a small tube of Selleys Kwik Grip adhesive. Same stuff I used to replace the new drum drive clutch lining. Fully set in 24hrs. It gets quite tacky quickly, but for the cone lining, you don't want to wait too long as you need to slide the cork into position. Popped the cone back in to hold it in place overnight.
Now the clutch cone sits further in with the thick new cork lining.