I just wanted to throw up a quick post to thank squishy for his rockin' mechanical skillz.
He took my (failed) emissions test info, diagnosed my problem to an O2 sensor, installed a new one, and got me to pass emissions all without working up a sweat. I'm way stoked, and just wanted to share. Not a huge amount of tech, but apparently high HC/CO emissions numbers are not a good thing.
Thanks again Squishy!