The one thing that is important to remember is that the published rear cg is about 2 inches unusable. I have the corvair tucked back against the firewall and wing tanks and a header tank. With full load and the fuel gone from the wings and getting low in the header tank my 2S starts to take on a different personality. If I was going to do it again (I may) the engine would be an inch or 2 forward and I would have bigger wing tanks transfering to a small header that was always kept full with a pump and recirculating lines. Thsi alone would make the 2S completely stable in my mind My weight and balance sheets bear this out and putting weight in the tail is the last thing I woudl dream of. Joe Horton ____________________________________________________________ Click for free information on buying your own franchise. http://thirdpartyoffers.juno.com/TGL2141/fc/PnY6rw2THygdeuu67YbwzewhvVEGUzhHQYTc5EE8dTBmj0WQ3zQNi/