VPI VTA Base question

Does anyone know how to tell the difference between VPI's current JMW VTA base, and the 12" Unipivot Base? Something visual? Or measurements?

I can't achieve the proper alignment with my 10" Fatboy arm and want to make sure I got the correct base.

markpao09-25-2022 5:13pm

wlutke Details Discussions Posts This discussion Message User 709 posts 09-25-2022 at 05:20pm Copy Comment URL Report Comment Edit Delete Remove the arm and measure spindle center to pivot spike. It should be 258mm. The 12” is 300.
markpao OP Details Discussions Posts This discussion Message User 519 posts 09-25-2022 at 05:27pm Copy Comment URL Report Comment Edit Delete I have the proper P2S distance. The cartridge is pegged to the rear of the headshell slots and it needs to go back a bit more. Just trying to find out if I got the right base at this point.
wlutke Details Discussions Posts This discussion Message User 709 posts 09-25-2022 at 05:32pm Copy Comment URL Report Comment Edit Delete That’s come up before on certain carts. Could be worth a search.
tablejockey Details Discussions Posts This discussion Message User 3,772 posts 09-25-2022 at 07:21pm Copy Comment URL Report Comment Edit Delete If the VPI forum is still active, might be worth searching. Reaching out to VPI is in order too. Are you using the VPI protractor? If so, it's supposed to be a distance that's somewhere between Stevenson/Baerwald. If you have an aftermarket jig, perhaps try Baerwald, which might push the cart more forward? I've read random reports some cart brands for whatever reason just won't cooperate with any amount of fussing.