Head or Block problem??

Has anyone heard of a head or block that doesn't completely seal together correctly? I'm wondering if that is a possibility for oil leaking from my head gasket. I have an 88 Si. I'd really appreciate it if I got some feedback...thanks
Drew

a warped head can cause that. a cracked head could. a crack at the top of the block (i hope for your sake not), and of coarse a bad gasket would be the first place to look. if you take off the head, you sould be able to see where the issue my be occurring from. or a mechanic you trust, could.