Ed,

Your GI is 21, no wonder you don't have much trouble. Yes my cyclometer has cadence. When I started, comfortable cadence was 72. I'm now able to ride in the mid 80's, but 90's are still too hard for me. I'm trying to focus on keeping cadence above 82 and then will focus on raising so I can ride the 90's. Thanks for the suggestion.

My current problem is I have a tight cassette, 12..23, so it's very very smooth but 35GI is just a tad high for a couple hills here. I think I could handle them in the fall by conditioning, but I would like to both condition and increase gear ranges.