To fit the twin clutch, I had to line up both clutch plates with the pilot bearing.
Easier said than done.
We tried to fit the bearbox, all went in ok till it got to the pilot bearing. The clutch plates were a fraction out and you can't move them once the clutch is fitted as it is rated to 600bhp and must be partly disassembled to release the friction plates. This means taking the bell housing off again.
So plan b was to use the gearbox shaft for alignment. I had to make sure it was level and then lift the engine to the same height, make sure the engine was level too, and slide the gearbox in, mark and tighten the clutch, remove the gearbox and hope it didn't go off level.
I then fitted a ratchet strap from the fork to the rear of the gearbox to disengage the clutch so it finds it own happy position as it could still be out slightly before turning over the engine.