Unfortunately, breaking off the screw that holds down the top plate on a Comfort or Classic heel is hard to fix. (Fortunately, it's freakishly rare.) If the screw is broken off within the plastic body of the heel unit, then hard to get it out . . . in which case only three out of four screws are holding down the top plate, which is not a good permanent situation. For the moment (if you're desperate), back off the vertical release setting a bit (i.e., to whatever release value you think you can ski within cautiously), which will lessen the pressure on the "sandwhich" the three screws are holding together.
As another posted already noted, the heel pedestal is substantially different between the Classic vs the Comfort/Vertical. I highly doubt you can just put a Vertical heel unit on a Classic pedestal, but worth a quick try I suppose.
The screw mounting pattern is identical though across all Dynafits (except for the rare-in-the-U.S. models that lack any fore/aft adjustment). Any differences you're noticing are just some sort of weird optical illusion. So you can uninstall the entire Classic heel, then reinstall an entire Vertical FT heel unit. The only problem is that you'll now have way more delta on one ski than the other -- some people are sensitive to this, and others don't notice at all.
Topic Author
