What angle should I set the VTA on my VPI turntable?

bifwynne,
I see you upgraded to the VPI stainless arm with VTA adjust.  My experience with the original stainless unipivot is this: When VTA is changed, adjusting the tail up decreases VTF.  Adjusting it down increases VTF.  A lot.  If VTA isn't close, the adjuster won't make much difference in sound.  The fix was procedural.  I began using a VTA/VTF gridded block to level the cartridge and closed in on the VTA from there, readjusting VTA then VTF and repeating.  With the Lyra I imagine the situation is compounded by its' sensitivity to VTF.  You may have arrived back at the sweet spot of coil alignment but not SRA.  When in the ballpark, the range of the adjuster will take you from murky to shrill and finding the VTA sweet spot is easy.

Another VPI owner. With my Sussurro, sounds best when arm is slightly higher in the back 

wlutke

When VTA is changed, adjusting the tail up decreases VTF.

Just the opposite: Raising the "tail" (pivot) will increase VTA.
See VTA/SRA diagram here.

cleeds,
Wrong. On a unipivot the balance changes and I am correct.  You're comparing VTF and VTA.  Two different parameters.  
There is a typo though. There is no VTA/VTF block. It’s a VTA/Azimuth block. My bad.

But if you replace VTA with VTF in cleeds post, the statement is correct, tail up, VTF up.