Where manifold bolts to tractor is gasket only. There is no gasket under the unit, just metal to metal. You will not need a gasket unless you take the bottom plate off the touch control. If you do that, ge6t a gasket, rather than form a gasket. I tiny spec of the form a gasket getting inside the system can easily cause a complete rebuild.
If you are not part of the solution,
you are part of the problem!!!