Tenor Drums - no sound

Working on a piece using the "Battery Percussion" instruments. When attempting to add notes to the Tenor Drums, there are notes at the low end and the high end that, while present on the clef, produce no sound when played. This would be any sounds attempted to be created on either the low A or the high B lines. While the Drumset editor insists there are available sounds to be used, when they are utilized and the measure is then played no sound is emitted when these notes are played. I assume that this is some sort of bug within MuseScore, otherwise those notes would not have been made available for use.