I have just finished the Bullet 2 glider from J Perkins and today it was the first time out and I was trying to trim it up.
I was launching on a bungee and now and again it was drifting to one side so I gave the ailerons a nudge to correct it. Sometimes it worked but other times it would just spiral down to the ground and then continue to be dragged by the bungee and I couldn't correct it by pushing the stick in the opposite direction.

I have since been back home and re-balanced the model which was quite a way off and tried to level out the control surfaces.

Is the spiralling due to something not being trimmed up or just my kak flying skills as I'm still trying to get to grips with ailerons ?

Cheers

Rich