It's great to see a lot of building going on. For you builders yet to reach the plumbing stages,
I wanted to recommend Permatex Aviation FORM-A-GASKET Sealant Liquid
3H 80019. I've waited to see if this was going to be a good product, and I haven't had the first seep, at the beginning, at annual, nothing. And it's still soft, which of course is what you want. For those of us who would like to build again and do some things differently, that's not one of them. There are dozens or hundreds available, glad I picked good one. I hope this is a useful tip. (Resists lube oils, antifreeze, aviation fuel)
Denise and Rocky Whitman
Series 7 912S
Austin