Noticed from one of your earlier posts that you intended to replace the engine
mounts. Well a word of caution : once you have aligned the gearbox
flange with the propshaft coupling to your satisfaction, run the engine
, then leave it for a few days. Then uncouple the shaft from the gearbox and re-check the clearance. This is necessary in order to make sure that engine has not settled into the engine mounts and thereby altering the coupling/flange clearance.