Need help about Aerobird
 

I have had my aerobird for a year now and i just got the x pack. Before i got the x pack the plane would hand launch very easy but for some reason with the x pack v tail and the stock battery it wont go in the air it just goes right at the ground like there is too much weight or not enough lift. I looked at the manual and i unscrewed the rear screaw to make it clime easier so it would get in the air. But that didnt work either.

***JOSH***