Thanks all for your replies so far.
To respond:
I can ship it, but it's an extra $32 fee. In that case driving to the burbs is cheaper. Plus 4-6 weeks turnaround time.
The Downer's Grove place was one of their authorized places. I may well just bite the bullet and drive it out there, but I'd love to know a reputable small appliance repair place in the city for this and other big-ish kitchen gadgets. I think the Kitchen Aid would strap nicely to the rack on my bicycle....for some good pictures too. There's also an authorized repair in Elmhurst, which may be closer for me, although I think they're pretty equidistant.
I use the Kitchen Aid a ton (this one has 9 years of heavy use on it), and our machine growing up would occasionally have the same problem which is a relatively cheap fix (it's leaking grease out of the accessory attacher and all around the metal band around the motor--and it recently started squeaking, which means there's not much grease left--so I've left it idle--so sad, no meat grinding right at the peak of hamburger season). I read somewhere online when I was researching fixing it myself that some plastic part is designed to wear out over time, and can be continually replaced, thus preventing more serious damage to the motor from heavy use.