I will just add my two cents to this. When I split my tanks open, I take them to an automotive machine shop. They have a giant, horizontal belt sander. It’s very purpose is to true up slightly warped parts. I give the guy twenty bucks and the tank halves are as true as the day they were made, in about five minutes. Also, the last tank I did was a WD3S Wizard. Rather than fuss with a gasket, I tried an experiment and used that red, jelly donut-like, anaerobic sealant, the same stuff used on crank case halves. It is known to stand up to ethanol, at least as good as anything can. I let it set up for a week, just to be sure to give it the best chance at success. I ran the motor at the Lowell Mass meet in September, for at least an hour straight, with no leaks evident. Going forward, I think I will do this again. It was much easier than the gasket method.. It “seams” to work, if you’ll pardon the pun.
Long live American manufacturing!
