Super Jet 62t cylinders with factory pipe exhaust manifold

What gasket did you guys use to mate the 61x fpp mani to the 62t cyl? Any port matching need to be done to the gasket?
Well you should use a 62T gasket , lay it on the 61X mani, mark it and then grind it to match the gasket. I would not drill the holes larger but install 8mm helicoil inserts into the (larger) 62T holes. You could " glue the gasket to the manifold with a gasket cement such as Permatex High Tack. Alternately you could use the larger 10mm screws after drilling the holes in the manifold larger, but leave the two top inside ones 8mm (install 2 inserts) or source 2 10mm Yamaha capscrews with a 12 mm size head. Yes, Yamaha has them (don't know #)
 
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