Rebuild of L24 Head

I had two valves hung up and removed the head and brought it to a local engine rebuilder . He found the head out of flat by .026. I agreed to have him send it to a place in canada and they heat treated the head to flatten it and took a trim coat of .006 inches. They did a beautifull job. The engine rebuilder will have it ready when I get back home. My question is do I have to treat the head gasket in any special way,that is , need any grease or lubricant. I have had various opinions on this gasket. My z is a1971 and I have had it in my garage fo 14 years waiting for time to restore it. Like all z cars this vintage I will have to do a good deal of work on the quarter panels and the side panels under the doors.