VPI 3D arm

Sure they did,  Please re-read the first two responses.

@drewmb1 , I am using two different metal Classic arms in lew of the 3D arm that came on my Prime. One of the arms are off a Classic 1 and the other from a Classic 3 with no mods, these arms are interchangeable, I believe the problem is with some of the older 10 inch arms.

Yes, you are correct.  It's actually that the damping well interferes with the 3d arm.

I am excited about using my 3d arm though, presuming VPI can get the owner to approve a shipping ticket...........

If you wanted fast turnaround you should have ordered the dual pivot from a VPI authorized dealer who are set up to deal with retail customers as oppose to VPI who are not.