Suspended Cymbal Rolls in Mixed Percussion don't finish

I have a 3 beat Suspended Cymbal Roll in one of my songs, and the roll starts as pianissimo, crescendos for 2 beats, and is supposed to end as mezzo-forte, and then ring. The roll does not make it past the first beat, and it doesn't crescendo at all. The Suspended Cymbal shares its part with Crash cymbals, and I would like to not make them separate parts. Are there any ways to get around this? The roll notation is attached.