Solo Pro 180 Tail Rotor Different Pitch Range

Video Channel
Please help us to find bad videos. Broken or unappropriated video content?
The tail rotor pitch for "rudder right" is much greater than the other "rudder left". This does not look normal as I think the tail rotor pitch should be equal for rudder left or right.
I've already lengthened the tail servo push rod to the maximum length.
How should I fix this?
Fpvracer.lt is not the owner of this text/video/image/photo content, the real source of content is Youtube.com and user declared in this page publication as Youtube.com user, if you have any question about video removal, what was shared by open community, please contact Youtube.com directly or report bad/not working video links directly to video owner on Youtube.com. Removed video from Youtube.com will also be removed from here.