gearing up for my first tour in two weeks. Unfortunately, I haven't had a chance to "train" as much as I was planning to so now I'm getting kind of nervous. My lowest gear is 26x32 which according to Sheldon's calculator is a 22" gear. Does that sound low enough or should I pop a 24" ring on my triple instead of the 26" ring and give myself something closer to 20"? any thoughts?