by the way, how is the cable attached to the frame? Is there a cable stop on the frame itself, or does it use a cable hanger coming off of the seat post collar?
Is there any slack in the cable? Is the cable housing too short or too long? Is there any binding in the cable?
The frame uses a cable hanger coming off the seat post collar. There is a healthy amount of slack (I believe) and everything about the cable looks good. I didn't put the bike myself, but it appears fine to me.