I had the same binding issues and tried different thickness gaskets to try and solve it. When I thought I had it, I used The Right Stuff with the new gaskets and the binding came back after tightening all of the fasteners. 😥 When it gets warmer out, I’ll try spinning it in the lathe for a while to see if it loosens up. Spinning them this way while spraying fogging oil in them also helps to seat the rings making the first start easier.

My motors previous owners wife must have been PO’d as he used what looks like a page out of a recipe book for a gasket. Maybe it was from a cake box, not sure.

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