I have seen the Permatex High Tack Spray product used with good results. The way I do it is to spray the pan and the side of the gasket that seals to the pan. Then let them sit for about 5 min and tack up. Stick the gasket to the pan and grease the other side and bolt it up. Do not over tighten the bolts for it might crack the gasket.

------------------
Benzmac:
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM