xk110 6g problem 

A 6G calibration flight should fix this.

I found the solution. It is from the bent feathering shaft. I fixed it and the problem has been solved thanx to advice from @microrcfriend

I have the exact same problem plus what Banggood had sent had a twisted boom which put the tail motor at an odd angle. I've messed with my controller settings a ton and still can't figure out what's wrong. Current status is trying to get a refund or a replace from Banggood.

Hi. Sorry to hear about your problem. I hope you have already found a solution. Mine started doing it today after a crash. Please help if you have found any solution. Thank you

What are those blades off of? They are green and not the original could you tell me what they are off of?

Try to remove the connector then return it back..may it help

X9d plus you using module multiprotocol??

Did you ever find out an answer for this? Mine does the same but on the left servo.

In 6g mode. Threshold must be not exceed 70%. It work 100%