Parts for U and use of ethanol enhanced fuels

If I made a gasket what type of gasketing material and what type of wire mesh should I use?

Also, I am having rusting in the crankcase, and was wondering if using ethanol enhanced fuels accelerates a rusting process.

Thanks for you insights.

I doubt running ethanol enhanced fuel has any effect on internal rusting, unless somehow a lot of unburned fuel gets past the rings and into the crankcase.

These old engines tend to draw moisture in the crankcase when they sit for long spells. That's why they rust inside. I don't have any idea what you could do for it in the future, except to run it pretty often. If you do let it sit over the winter, crack the drain plug a few turns and see of water drips out. water in the oil might be what happened to your screen, since its about on the bottom.