[dtengineering]

Any chance that the smoke coming out from the vents is just Dr. Pepper cooking off?

Guess not, if the Jag isn't working... but maybe you've only let the smoke out of the Dr. Pepper if your motors are running.

Jason

Edit: I'd try a bit of water, first. Perhaps a damp cloth or Q-tip. With the power off, even tap water should not present any problems, and I suspect it will be better at dissolving the dried sugars.