ForktailedDevil38 - Super Tigre engines are terrific, but I haven't found them to be quite as user friendly as O.S. Max or Thunder Tiger. The exhaust gasket shipped with the engine should be thrown away and not used. I also learned to double nut my exhaust manifold bolts in addition to thread locking them.
I couldnt agree more about the exhaust gasket and double nutting the exhaust manifold for the Super Tigre motors.