Hi Tom,
I see now where the problem is. Instead of using the repeat button try cranking up the feedback to 100% and doing the same thing in the Vintage, Tape, or Mod Delay modes. This will give you the pitch shift you are desiring without going back to 0.
Also, you may want to check out the looper for some of your more interesting ideas regarding going to chaos and coming back. Specifically try using it in overdub mode, turning the depth knob to smooth, and playing with the speed knob.
Hope this helps,
Dan
