Tail Not Holding on Hard Right Rudder???

[fletch3d]

I have a V500D01 with the original tail servo HM-ENERCO500-Z-41 (WK-4004). When making hard left rudder stop it holds great. When making a hard right rudder stop it doesn't stop sharply, it continues to drift. I am running a rx2702v-d, devo 8s and stock tail servo with align 72mm tail blades. The tail holds great on pitch pumps, I am running Gov. Mode and the tail holds well on pitch pumps at all head speeds. Forward flight the tail is great. I have turned off tail delay, have travel adjust set to 120%L and 120%R on TX. Not sure what to do next. There doesn't seem to be any binding issues and seems to move freely on the tail slider.

Any ideas???

Thanks guys
Chris