Missing tenor drum sounds

I do some work with drumline, attempting to develop my skills. I appreciate some changes made, like tenor diddles and rim shot sound edits, but there is one outstanding absence. There is no sound for the tenor spock drum or drum 4, effectively taking away key sounds in how I compose drumline. I'm sure this was a mistake when adding the new sounds, but it still throws a wrench in my process. Anyway I can fix this?