Bill: Great to see you pop up here again! I will definitely take it apart when it warms back up. It puts me in mind of a sticky cable/housing issue so I think cleaning and lube may fix it. I can't really simulate everything on the bike stand but I should be able to pull the spindle in and out to shift in the 3 gears. Come to think about it, I may try to come up with something in my drill to roll the front wheel fast enough to make it change.