You can't adjust VTA "on the fly" with an SME V. It's main failing IMO (and I own one).
The arm post is held in place vertically by the clamping action of two captive bolts that go thru the adjustable "sled" base (a really great mechanism that makes adjusting stylus overhang a snap).
There is a removable adjustment screw that you can insert to help you make small changes in the arm height, after loosening the clamping bolts, but you cannot do this while playing a record.
If you want to adjust VTA (really SRA) while playing a record, you should consider a Triplanar, or a Graham 2.2 or Phantom (the Grahams are unipivot design, the SME and Triplanar are bearing pivots)
The arm post is held in place vertically by the clamping action of two captive bolts that go thru the adjustable "sled" base (a really great mechanism that makes adjusting stylus overhang a snap).
There is a removable adjustment screw that you can insert to help you make small changes in the arm height, after loosening the clamping bolts, but you cannot do this while playing a record.
If you want to adjust VTA (really SRA) while playing a record, you should consider a Triplanar, or a Graham 2.2 or Phantom (the Grahams are unipivot design, the SME and Triplanar are bearing pivots)