How do YOU set VTF on your Rega arm??

The spring resonates at some frequencies, and is therefore better set to zero and use the weight for the downward force needed

..it seems to me that by using the spring to adjust the downward force, you still are including it in the system and it will still resonate...perhaps though at a higher frequency. Never the less, the rear counterweight would have to be set farther back to compensate for the spring tension. I think the closer the weight is to the pivot, the less inertia it can exert on the tonearm itself. Let us know the result of your experiment Sunnyboy1956. Thanks

I agree that the Expressimo counterweight does make a huge difference. If you want an even bigger difference, get the P25 (or any Rega) off of those rubber feet. You can put Cardas blocks, etc. under the table, letting the blocks support the outer wood surround. The question posed, however is the best use of the spring on the arm. It doesnt make sence to me to use it at the max, and then adjust, or use it at zero and then adjust.

I don't have a 300 now to check, but I can't believe that on max, the spring is "Locked" down. If it were, it couldn't function as a spring. Perhaps the resonant frequency is changed and if it is, it would change for the higher which is not good at all. Setting it to zero, gets it out of the system as I remember.