So I'm mounting some Freerides on some old Asteroids. A guy I know sugested to mount the front of my toe on chord center. So that is what I've done and the boot centerline is 2cm ahead of the marking on the ski. After the fact I do some reading and came across Spats mouting tips:

Quote Originally Posted by Spats
Different manufacturers put the boot center mark in very different places. For instance, Dynastars tend to be way forward, and Volkls tend to be way back.

Do NOT measure from the tip and tail. This will give you wildly varying results depending on how the tip and tail are constructed. Measure the running surface, instead.

Most racers put the ball of their foot (BOF) at the center of the running surface.

To find this, put the pair of skis together and slip a business card between them at the tips. Where it stops is the front of the running surface. Mark it and do the same with the tails. Measure the midpoint between these two marks.

Now take your ski boot and find the ball of your foot. Best way is to put on the boot, then take a small hammer and tap along the shell until you feel the right place. Mark it.

Mount the boot on the ski so that the BOF mark is at the center of the running surface.

To find a center mounting line for the PMGear ski, use someone whose boot is of average size for the expected user of the ski.

Mounting 1-3cm back from BOF center will usually improve pow performance at the expense of maneuverability on hardpack. Park skis are often mounted forward of BOF center, but the Bro Model isn't a park ski.

It's worth experimenting with the demo binders before you commit to a location on the production ski.
I have also come across some differing opinions. Mounting the boot toe at chord center. Mounting your toe at the balance point of the ski. And also the suckers who simply mount boot centerline on the ski markings. Anyone out there with some experience want to comment on the different theories, what works, what doesn't, and how different mouting points wil affect performance. Ideally I gues testing with demo binders would be the best, but not everyone can go to the time and trouble.
I don't mind remounting my skis since they already have a couple sets of holes in them.