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I had this same problem too (I think the thread was lost in the crash) and was finally able to figure it out, and it was a bad AD633.  After looking over the spec sheet there is two pin outs for this chip; a JN/AN & a JR/AR.  I think the cheap ebay chips are the JR/AR version (but they are labeled as the AN version) with the power rails on the 3 & 6; the one needed for the Freekout is the JN/AN version with the power coming in on the 5 & 8 pins.  I finally got one from Mouser and it it works fine.  So if your going to build one just get the AD633ANZ from Mouser and save yourself the headache.

I'm planning on building a "Stereo" Bloviator using two boards but I was wondering if it would be better to use 2 Dual Gang pots (1 gang per board) or just the 4 pots?