Richard,

I had the same problem balancing my edge.. It was VERY touchy on the balance stand. I was able to get it to balance by moving my rec. battery around, but I almost had to hold my breath while I stabilized it on the balancer, get it to level and then let go.. It was strange, and unlike all of my other planes.. I'm not sure why it was this way, but I figured if it would stay on the balancer i'd fly it.. I really think that if the heat had kicked on while it was on the stand, the airflow from the register would be enough to upset the balance.. I'd try the fingertip method. Mine was more forgiving that way.. Also when you think about it, your plane should balance at 3 3/4 inches and in a perfect world, will fly good with a full tank of fuel, as well as close to an empty tank of fuel.. So if the plane will still fly with this much of a drastic wt. shift it will probably be ok if you are reasonably certain that it is close? Make sense?

John..