I'll have to try and raise the seat a little. I figure working on my stroke is harder, but I get at least an hour a day on my bike (at least on weekends), so that is something to think about.

I think I'm not used to the lightness of spinning, so I'm bringing my legs up like I'm going to knee someone hard enough to knock them out. If that makes any sense. On lower gears, I don't have the problem, and I believe my normal cadence is most likely around sixty by my rough count.