Anyone ever change an intake manifold gasket on the Chev 5.7 Vortec? I have a very small antifreeze leak at the intake gasket and I am trying to see if there are any tricks or landmines before I tear it off. I am positive it is a gasket as we did a pressure test and can see where it is leaking. The funny thing is that when it warms up it doesn't leak, I know it is expanding and sealing the leak. So any tips for me before I start. I usually get into something and have problems so any help will be appreciated.