I just got my "Dynam I can fly" airborn today and it wants to roll right as soon as it leaves the ground. I have read that when you roll balance a top-mounted wing (this is what i have)it should stay up-right and a bottom-mounted wing will flip belly up. I have read 2 different ways to roll balance: 1)Wrap string around fuselage near propellar and another at the beginnig of the rudder and lift off ground. 2) Same as 1 except put string around prop/engine shaft.#1 stays upright, #2 rolls right and bellies up. Do I need to add weight to my left wing to keep it upright?

Thanks
Troy