|Existing baffle wearing thru the FiberFrax|
|New Aluminum heat shield|
Finally I have a third problem that is also equally serious. My Fiberglass fuel tank is starting to deteriorate. I attribute this to the ethanol that is in modern fuels. I never had this problem 25 years ago on my Wren. I also do not like the design of the fuel pick up on this tank. Another glaring error I made was the lack of a tank sump for the fuel pick up. I also need a fuel shut off valve. The tank head pressure is overcoming the reed valves in the pumper carb, causing the engine to flood while sitting. The other problem I discovered, was that the fuel filter and line needs to be routed on the inlet side of the intake plenum.The fuel was cooking off when the engine was shut off causing a vapor lock and making starting hot very hard. I started laying up a new tank and I bought a special fuel tank epoxy coating designed to protect against the ethanol in the gasoline. Anyway, better to find all of this out on the ground then of first flight!!!