Help me troubleshoot my first pattern for Aggregate Music System by Lectric Panda!

[Matti]

This device is awesome, and surprisingly easy to grasp - the manual really breaks it down, and I can recommend using Tools>Options>Set value to quickly get an idea of what kind of values goes where.

That said, my first pattern contains a couple of unexpected rests, and I can't see what causes those.
If anyone who's already well versed in the player can tell me what causes those rests, I'd be grateful!