Trying to map the knobs on my Alesis V49 midi. It does work (checked with presence). When in Midi Learn, it recognizes the knobs (4) and buttons (4) and I can assign the buttons. But when I right click on the knobs I do not get the option to assign them and they have assignments which it does not give me the option to change. I want to use the knobs for project volume, track volume, pan and maybe zoom. Any suggestions? Thanks