^haha yeah, dishwasher.
You could easily re-use the stock metal head gasket if you clean it up well with carb cleaner and put a little oil on it before you put it back on, that seems to work fine.
However the stock base gaskets stick to the cylinder too well and I have a feeling yours will get wrecked taking off the cylinder ( Nothing you can do about it because they are likely old since they are stuck on so well )
Gasket sets are cheap from treatland or 1977.
Here is a few, I dont think the 70cc gasket sets make any difference
And for cleaning again, maybe little scraper/putty knife may work to get in between the fins, and some cheap wire brushes if you dont have a bench grinder. Tape off the mating surfaces with some masking tape if you use a rough wire brush.
Either that or just leave it, Its probably fine. (edited)