I am currently teaching myself to fly heli's with my 36. However when I lift off the heli will come up to lets say waist height but then when im correcting it to keep a stable hover it looses heght and normally touches the ground and then will lift off again. What could be causing this? Also I am having trouble keeping the tail straight. I was wondering if a better gyro, im looking at the GY240, would be an improvement even with the standard walkera radio. Thanks,

James