Helical Driven Pattern

I've been attempting to create a roller with holes in a helical pattern running along the length, think of a floor vacuum brush.

I've been using the curve driven pattern without any success. I know I can cut or extrude along a helical path, but I need to place holes along that helical path. A circular pattern which increments along length of the part for each hole feature would work.

I suppose I could figure this out manually and then pattern multiple patterns, but I was hoping for a simpler solution.

Thanks for any suggestions or tips.

Keith