[R-390] Filter fishpaper/ Foam PE

[quartz55]

I really don't want to put the old decomposing fishpaper back in the assembly.  It's pretty brittle at this point.  What else can I use that may be more stable?  I can get some teflon film, but it's hard to find stuff at .006" thick and nothing would stick to it and it won't stick to anything either.  It looks like G8OAD didn't use anything.

The more I play with the foam PE for the donuts, the more I like it, except for the melting quality, but I'm going to test that.  If I can find some thermal paper to replace the fishpaper the foam PE may be just fine.