Bob, I agree with most of what you're saying. However I do believe that arms such as the 2.2 is it possible to get repeatable VTF settings provided the scale used is good enough which is what SirSpeedy is telling us. I am betting that I could do this with my RB-250 that has a Mitchell weight installed with the micrometer-like VTF adjustment. But first I would need to invest in the $800 Winds (OUCH!). If we're talking about a Vector, or TriPlanar, or perhaps your Stax (I'm not familiar with the VTF machanism on that arm) I will agree completely with you as it is damn near impossible to move the weight in such small adjustments on these arms. All this being said, I think we do all agree that getting it really close with the guage and then adjusting by ear is the way to go.
SirSpeedy, I've only played extensively with a 103R and a Benz Glider. Both of which do no seem to react much to VTA over a fairly wide range. This used to drive me crazy because here I am trying to listen for changes and they just never happened on both the Vector and 2.2. I've since learned from others that these two cartridges are not real sensitive to VTA and I guess I've proven that to myself.
SirSpeedy, I've only played extensively with a 103R and a Benz Glider. Both of which do no seem to react much to VTA over a fairly wide range. This used to drive me crazy because here I am trying to listen for changes and they just never happened on both the Vector and 2.2. I've since learned from others that these two cartridges are not real sensitive to VTA and I guess I've proven that to myself.

