C3 (note number 36) should be correct for Session Drummer's Kick, and you should see the note events on that line in the PRV. If not you can click the drum name on which the events are showing up to select them all, and Shift+drag them down to "BassDR" (Shift keeps them from moving in time).
P.S. If you right-click the area where the drum names are shown in the PRV, you can select "Use these Note names instead", choose 0... 127, and you'll see the corresponding note numbers.