I finally had time to pull the engine and gearbox yesterday. I guess I’m a ‘splitter’ - it looked easier to do solo with the engine unbolted from the gearbox.
After removing the tail housing, checking that everything was where it needed to be, I reassembled taking care to align the pin with the fork on the selector shaft and (drum roll)…. I now have a perfect feeling shifter with neutral between 3rd and 4th gears, rather than 5th.
I can’t wait to try it, but I’m waiting for clutch/flywheel, slave cylinder, etc. from QED and Burton. It should all be together next week though.