The end of the timing side needs a shoulder putting on it due to a design change. (Clearance for the sleeve drive chain links). In order to do this the crank assembly needs to be mounted and spun, which was quite a challenge! The conrod doesn’t clear the lathe bed so it’s been suspended from the ceiling with a bungee, to allow it to move but retain some tension. It’s a full sized turning crank that gives a good idea of what’s going on inside the motor, not something you see every day!!