V120 rudder issues

[Fr0gin]

I fianlly after 30 days waiting got a transmitter for my v120. First off it is so confusing to bind, not even sure if i have done that right. If someone has a walk through for an 8s let me know.\
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Anyway it seems I can move things on the heli now. But when i throttle up the tail spins like the rudder is not working. It's now hard to find the problem because I think it stripped the gear. I have a spare but I'll have to fit it later.\
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What have i done wrong to mean that the rudder is not working correctly? If i hold it and turn it when throttled the servo does not move but I believe it does if i throttle and use the rudder control.\
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Help please\
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Thanks

[Fr0gin]

Now sorted. It was the gyro was low. Still have no clue how to make the aileron and rudder more sensitive though