One other thing, my song is just one chorus, it isnt divided up into 3.
As it stands, all my bars are set to the normal settings apart from 1 (which is now 1a), 9 (which is now 9a), and 30 (which is not 30a). 1,9 and 30 are now in blue coloured boxes, the rest are just normal.

All I really want is to get rid of the drum fill. Is there any way I can actually get rid of it altogether? Or is there always going to be some?

Many thanks to both the above posters for reply.