You can take one of your old worn out outdrives and open up the slots with a Dremel and a cut off wheel or use a mill so that you can fit a blade over the pins on the universal or cvd. We've been doing that for awhile out here.

I've been using the same outdrives and universals for a year now with no wear on the outdrives and the same set of universals.That's over 250-300 batteries. Universals have some wear now, but the outdrives are still perfect. The outdrives were a hardened set that were slated for the trash can