Only the problem with the other gy401 , the wires need to be replaced. It's have little damage close to gyro. I will do it. The 500 pro will be converted to flybarles ,just I keep the kit to replace , after 1st crash. I just had one last week, (lost the tail ball link ) but doesn't affected the rotor head. Lucky!
Thanks for your help!
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Also I have one more question if it's not a problem.
On the tail, I no expo at all. Peoples say that it's not a good idea. But on the tx I have a less than half way movement, and it's fully turn to the endpoint.
So should I use expo or not, and leave like how it is ?