VPI 3D arm

@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. 

Actually, it's not the dual pivot.  It's the sharp pointy pivot point minus the  damping well as stated above.  Nice try though....