Can anyone help with this?:  We've been having fuel contamination problems
with a recently completed LA 320.  Avgas samples taken from the wing tanks,
at the engine, from another aircraft, and the fuel truck all appear standard
clear blue with no residue visible.  If left in the sun for a few hours, fuel
turns milky white, then tan.  Tan stuff settles to bottom and after fuel has
evaporated off, the residue left behind has the smell of old stale auto gas,
and a very smooth texture.  I have been building airplanes for over 23 years
and have never seen anything like this.  Any comment?  Thanks-Rob, Top Flight
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