How did you guys with powerlogs get it to seal at the crossover? My stock manifold didnt have a gasket and I even checked in the parts dept at work to make sure it didnt come with a gasket from stock. From factory the manifold does not have a gasket there. My powerlog leaks like crazy. I used high temp rtv but its too flexable and blows out when I boost. So how did you guys do it?