Steve started on the engine at 17:30 last night, first thing he found was the clutch thrust washer behind the clutch was lifting the basket too high so the clutch lock tab had no spline to grip to, after sifting through a multitude of shims he managed to sort it. Next thing was the oil pump cog was impeding on the drive cog, again a small shim sorted that out. On the bottom of the left hand side casing is a threaded hole that you screw in a crankshaft stopper, Steve had been using this all night to hold the crank but when he put the capping bolt in it stripped the thread! Steve had to drill, tap and put a helicoil in, all this AND stopping all the swarf going into the engine. After about 40 minutes he managed to suceed.