is this ok?
 

I bought this from GOGO. RC, the stainless piece that holds the blade holders is not drilled straight, I was told this is ok, would you guys use it? You can see that the blades holders are not parallel with the v block behind it
https://cimg9.ibsrv.net/gimg/www.rcu...09ade9a662.jpg
https://cimg0.ibsrv.net/gimg/www.rcu...a3bbc0e308.jpg

I would say no way, those tail blades will not track right and setup quite the vibration. I have bent the tail yoke (spindle shaft) and it had a crazy high freq vibration that freaked the gyro out.

If there is no vibration it means that everything is okayif. Otherwise you should go to a specialist.