Nighthawk,
I also use the v15vxmr and have noticed the difference the tracking force can make when using the stabilizer. I could be way off, but I think of it much like the loading of the suspension on a car. I think of the little brush as a spring. If the tracking force is light, as shure recommends, there is less loading on the stabilizer and it's "shock absorbtion" is slower to react or has a greater distance to move, however you want to look at it, but the effect is that some of the load is taken off the cantelever. When we set the VTF higher we have forced the loading on the stabilizer and also the cantelever so the whole mechanism is quicker to react and get back down in the groove because it doesn't move as far vertically. BTW, I also notice more sibilance with the lighter VTF.
In anycase, I agree that it does sound better with the stabilizer in place and with the higher VTF.
I also use the v15vxmr and have noticed the difference the tracking force can make when using the stabilizer. I could be way off, but I think of it much like the loading of the suspension on a car. I think of the little brush as a spring. If the tracking force is light, as shure recommends, there is less loading on the stabilizer and it's "shock absorbtion" is slower to react or has a greater distance to move, however you want to look at it, but the effect is that some of the load is taken off the cantelever. When we set the VTF higher we have forced the loading on the stabilizer and also the cantelever so the whole mechanism is quicker to react and get back down in the groove because it doesn't move as far vertically. BTW, I also notice more sibilance with the lighter VTF.
In anycase, I agree that it does sound better with the stabilizer in place and with the higher VTF.