Nose weight ?... That's interesting.. I have the 66" with a Mag .91 4s in it... I was way nose heavy. I mounted the battery in the fusalgae about halfway back between the wing and stabs... No lead needed that way.. Wonder why the differance ???... Flys great, the .91 is adequate but not as much power as I like in a Extra... Was thinking of a Saito 100... Lots of weight gain and not that much power gain with the older 1.20's IMHO..