[arcturus]

Problem solved for the time being. As usual new gaskets late on arrival, probably come tomorrow after I have left for the exposition. Sods law. Obtained some exhaust sealant and pulled off the manifold. Coated both sides of exhaust gasket liberally with sealant and replaced manifold. So far on test run al AOK. The bummer is that I will need to strip at all down again later to fit new gaskets.