I am installing a torque converter on my 1991 auto TT, I am unsure should i block the hole up where oil comes out from and attach it to the flywheel before i lift the engine in or should i attach it after lifting in the engine? i have lost the dowel to attach the gearbox cover place to the gearbox so im hoping to just line it up and hold it in place with the bolts..would this cause any problems? thanks 4 reading!