new question. do i only tune the edges with the tuner and that's it? nothing else needed?
does magne-traction need tuning?
Yes in fact since you have "contact points" they're more likely to potentially wear down quicker than a single long edge. It's just basic physics.
I tune with an edger but every year or two I bring my board in to a shop for a complete tune... That's only once every 50 days or so though. The edger I use every 3 days or so on the hill.