I'm with Artisan on the Fuel Tank issue. As dear ol' Dad use to say. "Never time to do it right, but there's always time to do it over."

So when ever possible, I do isolate the fuel tank and that in turn virtually eliminates fuel foaming as a problem should the engine start acting up.

I do have models where the tank has an interference fit in the formers to retain it and if I should have engines problems I do keep this in mind before starting to needlessly tear down an engine.

Neoprene weatherstripping works excellent here. Inexpensive, comes in a variety of widths and thickness.

Happy Fly'n....