Whistle without handle

I had some trouble printing the whistle by Zaggo because of the handle, so I just suppressed it. I've tested it on a Makerbot with the MK5 extruder, abs plastic and the default settings of Skeinforge for this machine and it prints quite well.

The only thing that needs to be improved, from my point of view is the ball inside the whistle, I can't get it to hop when I blow it, I don't know why.