As a follow up, the 16T sprocket was a great change. Much more road friendly now with a first gear that allows the bike to gain some ground speed and move out into traffic. 5,000rpm is an indicated 70 mph. I think I'm going to try a 43T rear sprocket which will copy the MT 07 stock gearing. By the way the front and rear sprockets are the same as the MT 07. Strange as one has cast wheels and one laced but they are the same.