Thanks to Pete's hand drawn schematic I finished bending my Type B Barbie last night.  Pics and sketches can be seen here:  

http://s119.photobucket.com/albums/o153/chris_stuff_er/barbie/

For some reason this unit didn't like dropping the tape speed too low because the motor would not be able to ramp back up (crash), so in lieu of the 240 ohm resistor in the tape speed circuit I used 340 ohms.  I also found a 1k pot gave me a better control of the range of the speed in lieu of the 5k pot in the schematic. I might have mis-interpreted the schematic, but in experimenting found my own way to get higher tape speeds with an additional 25 ohm pot and switch.  I also included some of my notes while experimenting with the various bends listed in Pete's guide of the IC connections.  I "X"-ed bends that did not seem as cool as others so that I could narrow down my choices of the controls.  I managed to fit 8 pots on the top of the machine which control 7 bends, along with each corresponding switch and an ON/OFF switch for the whole unit.  This was not easy; I don't own a drill, just a battery operated dremel, and didn't have any kind of ruler or stencil for planning the holes for pots and switches.  Finally, I used some Aqua Teen Hunger Force stickers (I got from buying one of the seasons on DVD) to mask the Barbie branding.  Perhaps I should have just let it be, I mean it's already pink!  haha.  If you wanna ask me something about the process, I've included my myspace link.