Setting antiskate on a Pro-ject arm

I just got back into analog with an entry level Music Hall turntable and am enjoying it tremendously. I recently changed the cartridge to a Shure M97xe which has a significantly lower optimal VTF than the cartridge which it replaced. (1.25g vs 1.70g) I am assuming that I need to reduce the antiskate also. Is this correct? On the pro-ject tonearm there is a little stub near the pivot point with 3 notches. The manual says to place the antiskate weight/thread on the middle notch. Assuming that I'm correct in needing to lower the antiskate, which notch is the lower value - the one closer or further from the pivot point? I figured it's the closer notch but to be honest I listened with the antiskate on all 3 notches and I can't really hear a difference. I don't want to damage my records over the long haul so I thought I should set it right even if I can't hear a difference.
Thanks in advance for your help!