Timing Cover Gasket Replacement

I am replacing the timing cover on my 340 because of a gasket leak. I am also installing a new ATI Super Damper. I am looking for the proper procedure as far as to how and when to tighten down the timing cover. I believe the timing cover has to be put in place loose so the Super Damper can line up the front seal on the crank shaft properly, but I am concerned with the material used as a seal drying before I get the Super Damper in place? I never did this operation before- so I read and ask questions. Looking for advise.