I'm rebuilding a KFIII orginally completed in 2002. It has two wing tanks. The odd thing is that they are different. One is black and appears to have been coated with kreem, the other one is a grey color and not coated. They are both fiberglass but appear to be made from different resins. Exact same size and shape. They are plumbed into a comon header tank. Anyone have any ideas if there was a change in tank materials in the late 90's when the kit was shipped ? Just wondering if I need to be more concerned about ethanol in one or the other.
Thanks