Good point Alan, We have a larger nose leg 11/2"x 83 thou heat treated,as it will have an extra 100lb on it, the C/G would move, so the fire wall would also move. My blue Cougar nose length is ok ,you may notice the grey Cougar has a longer nose,this is good for a 4 seater with the Jab engine weight,where my blue one is limited to 75kg in the rear seat. I am also looking at a longer canopy (my new sierra canopy we made a 3m long bubble),a lot less curve)and move the join aft for better entry to the back seat,a better folding seat,also a lot more sweep on the fin.