I have this arm, and that part of the arm tube definitely contacts the damping fluid. No idea why yours doesn't. Check with Mike at VPI.
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Are you sure that no part of the arm is touching the fluid? Mike from VPI told me to add enough fluid so that when you lift the arm off the bearing/pivot, a small "thread" of fluid extends about 1 1/4" before breaking. I use a little less fluid, but even when I use very little, you can see a thin thread develop between the male and female bearing when you lift off the arm. I assume that if there were "no contact", no fluid would stick to the top/male bearing when the arm is lifted off.
Yes. I am sure. I rechecked it about 10 times. Mike from Vpi told me the arm I got has the conic female bearing in the arm tube set too low, that effectively lifted the arm out of the oil cup. I was going to adjust the setscrew to lower the arm tube but I don't have the right allen key. I will do it this weekend.
Thanks for this thread. I just checked my arm after owning this arm for a couple of months now. I also set it up according to VPI on my Aries. There was no contact with the arm female part of the bearing so I increased the amount of damping fluid to within 2 mm of the top of the cup. Now when I lift the arm off I see the 1 1/4" of fluid thread before breakage. Miles Davis has improved in overall soundstage and width. Thanks again!