Can someone please tell me what the heck could be going on with my Vario Benzin Trainer? When I come out of the throttle from forward flight it shudders and wags it's tail. I am new with this machine but it's been flying for three years. I let it sit for over a year. What's going on?[&o]

May need to be richened up a tad with the change in weather.

Thanks, I'll try it.