bunkerbuster

I have been having a problem with my Holley tall valve covers on my ls3. The gasket does not seem to want to stay within the gasket track. I fire up my engine and let it idle and rev etc.. then moments later oil starts leaking

This has happened twice now. I was curious if anyone else has had this problem? I use grease to keep the thing glued in place. So I would like to think it is being installed correctly.

My ls3 is in a 4th gen trans am, so it makes it super awesome to replace if I have to. (Especially since it is on the passenger side)