Guys, thanks for all the threadjack guidance on removing the charcoal canister. I'll be sure to find ways to prevent anything from getting up into the fuel vent line.
And lmtdgov, I've ridden and thoroughly enjoyed Hwy 33 (and 166, but that was getting chipsealed when I rode it, which decreased the enjoyment), but I rode it from south to north (which would seem to be the slightly more entertaining direction--all lovely, though). 33 passes through a quite remote region of the Los Padres National forest--lots of tight twistiness and great views over the chaparral canyons, and 60 miles between gas stations, so fill up. Watch for gravel/rocks and occasionally ice in winter on blind turns. Fun short tunnels, too. There are a couple of sandwich places near the summit. Boccali's on Hwy 150 (which connects Ojai to Santa Paula and hits Hwy 126, which takes you east towards LA) coming out of Ojai is worth waiting for in terms of food, though, if your timing works out that way.
166 and the northern part of 33 are pretty flat and straight--oilfield country. The western section of 166 gets curvy and canyon-y, though, but by Cuyama it's flaaat.