I just opened my falcon 40. I have read a lot of post and still cannot hover. I checked the paddles to be level and the main blades to be loose to find there sweet spot. Good batteries on receiver and heli. Checked servo operations and seem normal. I bought this used and was wondering if someone might have screwed with the gyro? I tried and tried to hover and the heli just wont. Adjusted trim on receiver and still unable to hover. I see a lot of people can hover right out of the box. Any help or suggestions? Thanks BB