I just got MM and ready to try it on an existing mix. I've inserted it on all the tracks and set them to 0 but what about existing busses? Do I put in on the busses too? Should I do a MM mix on the tracks first and then the busses or do tracks and busses at the same time? What's the best procedure? I watched the video but it didn't mention busses.

Where does MM store its factory presets? I'd like to add the available Xtra presets in with the factory presets instead of where the user presets are located.