Bike Service

I took the bike (I call her Anni-short for Anniversary..ok so it's bad but I like it) for her service at Tramontin.
I told them about the rough idle and bad 32mpg and they looked it over and said it was all fine. The computer says everything is running great...so why don't I believe the computer? Guess I'll.try some dry gas and pray the long day 1 ride gets me more than 32!