O Ring Damper missing(?) and one torn
I was adjusting the heli tonight and ran across what I'm pretty sure is why I can't get the tracking right. According to the book, I think I should have 4 rubber O-rings and they should all be inside the thick washer on the feathering shaft. The photo I am attaching shows where I found the damper that was torn (outside the thick washer in relation to the center point) I'm guessing that it somehow squeezed between the casing and the washer (which is how it got cut?) The part that baffles me is, where is my other O-ring? Could it be possible the head came assembled without this other washer? Maybe this is why I could never get the tracking right?
Edit (terminology, sorry)