In my A6/Z6 Mini Me with a Y8 inatke manifold. I broke a corner off a port so I JB Welded it back togther. It ran excellent up until I gave it a degrease with Super Clean. Now it won't stop surging between 1000 and 1500 RPM. Do you think it dissolved the JB Weld? The throttle body gasket? The inatake mani gasket?