I've seen floating "peas" or mini ball specially built for this. The Grumman AA-1, AA-1A, and AA-1B had an Airworthiness Directive (AD 78-13-04) requiring the installation of floats on the fuel site gauges.
The "F / T Hose Tail 1" - Modified" on this site http://www.n-p-e.com.au/catalog/index.php?cPath=542_631 shows a ball and the ends designed to keep the tube in the sightgless. I haven't found a supplier for the balls but one suggestion was to make one from Q-cells and VE with red dye in the mix. Worth a try? Paul Smith Brisbane, AUSTRALIA pk.sm...@bigpond.net.au http://kr2spacemodulator.blogspot.com/ -----Original Message----- Brant Hollensbe Wouldn't placing a small piece of cork in your site gage tube increase the visibility of the fuel level. The cork would always float on top of the fuel level in the sight gauge. You may need a screen to keep the cork from going into the fuel tank when the tank is emptied.
