drum track not sounding

I firstly design all the drum sounds on one track and they all sound. I then manually split them into several tracks for kick, snare, hi hats, cymbals and toms. Some tracks sound but then some don’t even though each particular drum sounds on the original track. I have the tracks set to groove agent one with the appropriate drum map.

Also, I know about ‘dissolve part’ but it is too atomic for me. Is there a way of dissolving the part but grouping certain things the way that I want?