good idea. earlier motobecane variators came with shims in them that stopped the sliding cheek from opening at a certain point. removing it allowed for a better gear top end gear ratio, so milling the plate would do the same thing. not that you guys need to have this explained...
but i was instructed by "wari" long ago to do this, elliot as well.
i would imagine, as with other mods like this, there is a "too much" point where taking off too much material will just fuck everything up. the fun part is finding out where that "too much" point is...