Installed the new style exhaust socket on our upgraded motor and mated to old style exhaust socket using old style springs. The required mating gasket has plastic/metallic feel and is very fragile. I broke one while attempting to slide it on the new exhaust socket. Decided to run it anyway and appeared to seal very well. No leaks, even with a broken gasket. Consider buying a few spares or being very careful putting it on the socket.