S1000 A2 Twitch??

Has anyone had an issue with the s1000 or 900 with A2 randomly twitching while flying? What could cause this? Could it be a radio issue? It does it in Gps as well as attitude mode. Any ideas???? Thanks
 


A few random thoughts: it might be loose connection somewhere, or a motor bearing getting sticky.
I will check the bearings to see if there is anything maybe i can notice. It happens randomly and i just want to make sure it is nothing super major. I have checked all of the connections and they are good.
 

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