I had a club champion putter fitting on Sam Lab and it made an enormous difference. I always thought I needed a mallet but based off numbers it said a plumbers neck was the jam. I don't know if it was more of the fitter though because he had me go from 33.25 down to 32" and reduced loft down to 1*, sounds nutty but worked marvelously to get my eyes over the ball.
Years ago, Eddie actually noted just from sight that I was missing right and just needed a touch more toe hang if keeping everything constant. At the end of the day a great fitter is always better than a computer but the computer can confirm the fitters thoughts.
If you're gonna 3 jack then 3 jack looking good.