Atkinson Brass Valve Repair

In my opinion, the greatest damage done to my HF Knopf horn is what has been done to the change valve. Just look at this video taken shortly after receiving my horn back from Atkinson Brass for the second time after they botched the first repair job.



Here's a photo of the change valve out of the horn.





Again, if anyone from Atkinson is reading this, this is what I want repaired. It may have looked ok "using fiber optics with monitor" but when the valve is depressed, it often binds up making the change to the Bb side impossible.