Spitfire manifold

I put the new exhaust gasket on the Spitfire today. I used a bit of exhaust assembly paste on the face of the gasket to help seal the gasket. When I started the car I can't see any sign of the gasket blowing. I took the car for a spin and the engine sounds a little quieter than previously. I think I might take it along to the club triumph eastern picnic at East Mersea island tomorrow.