ORIGINAL: Jim Oliver
Lots of modern engines don't use gaskets for backplates and the like. YS did use paper gaskets for the regulator housing; thicker than typing/copy paper, more like manila folder paper.
On the rare times that I need to have a gasket for a back plate, or such, I make it from a sheet of typing or copy paper; could use a piece of ''heavy duty'' aluminum foil.
Jim
Not an expert by any stretch, but as Jim says, I've used the "manila folder" thickness paper successfully for backplates quite often. The "Renew your Subscription" inserts stapled into many magazines are my gasket material. Also, I'll lightly coat my fingers in wheel bearing grease and put as little as possible on the gasket prior to installing (ie, wipe it all off). Makes me feel better about the gasket, but also makes removal later a little easier.
Doug