Mounting question

Alright, I've got some 189 One Life's that I want to get mounted with Jesters. I'm thinking these will be my do everything/daily ski. I just happened to tear out my Barron heel piece on my JJs and once those are fixed up again they will be my BC/pow skis. Was looking for some info on where the sweet spot is on them. The only problem is that the boot center line is off on the skis. One is about 1~1.5cm ahead or behind the other. I suppose I should start by asking the best way to measure them up and figure out if either of the skis have the boot center line in the right spot on the skis. I can't think of anything else right now, but I'll add to it later. P.S. I'm on iNS so I can't searchbar and I hope this thread doesn't go more than a page cause I can't see it!