I have 70K on my VC gaskets too, no leaks (m)
I used Permatex high temp RTV silicon (6B or 26B red or blue), a very small amount on the head side of the gaskets, a bit more in the corners next to the 1/2 moons in the back.
I always use a little sealant and never had a problem. I always make sure the head and gasket surfaces are free from oil, clean with alcohol before I apply the RTV.
I supplied Rajaie with some 540 info too.