Joe, nice write up on repairs and rework on your KR. http://www.eaa.org/experimenter/articles/2011-08_winter.asp Definitely keep auto fuel out of your fuel system. The deposits in your fuel system and perhaps along with some stickiness on the throttle were residue from the Ethanol in the auto fuel dissolving the epoxy in your fuel tanks. Refiners also put Butane in their winter gasoline to aid cold weather operation. The Butane will also dissolve epoxy. Teflon is a relatively soft material; Ethanol and Butane will make Teflon even softer.
Fuel tanks constructed with Vinyl Ester resin are Butane and Ethanol proof. Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA smw...@md.metrocast.net
