I setup the engine's position so it has a 3 degree slope to align properly with the torque tube angle:
>Loosen the front engine bracket at the center spring;
>Loosen all of the bolts in the rear engine mounts, 5 per mount;
>Insert the hand crank into the crankshaft;
>Tighten the rear engine mount bolts;
>Tighten the front bracket spring to avoid clutch chatter.
The front engine mount bracket and springs tune the vibratory behavior of the engine, and especially have an effect on clutch chatter. Reproduction springs do not replicate the behavior of the original springs, so it is necessary to adjust the front engine mount springs by iteration.