I'm getting ready to install an LT-1 intake manifold onto my 89 TPI Corvette but I'm having a problem. I have been told that the Fel-Pro 1205 intake gasket is the one to use, but when you align the gasket to the manifold, while it's off the car, the rear water outlet opening is open. The opening is only slight, but the coolant will spray out with great authority, has anybody done this manifold swap??