Last fall I had to pull my heads off to get a couple of glow plugs machined out. When I put them back on I used the C series gasket and arp headstuds. I installed them just how the instructions said to. Today I noticed that I was leaking a little antifreeze. When I inspected I found the head gasket seeping on the back of the head on the passanger side. The antifreeze in the resivor looks fine and the engine oil looks fine. How do I go about fixing this? Can I pull the valve cover and retorque the studs or do I have to pull the heads and put in new gaskets. It was a lot of work the first time I did it and I don't really want to do it again. There is now way I can afford to have someone do it. Not that I really want anybody to do it. I want to do it right but on a reasonable budget. Any ideas would be great.