freeze bearings and crank.put seals in cases,put bearings in cases,put a little oil on bearings,make sure trans shift thru gears and washers are in place.with everything back to say room temp,take crank out of freezer and slide in.warm left side case while adding sealer to right side and slip into place.button her up while checking crank and sprocket shaft for ease of movement.drop a little oil onto bottom rod bearing and go to it.