My corked P is lugging too much (IMO) to be in fifth gear up to about 45mph. Most of my roads are 40-45 so I spend too much time buzzing in 4th. Wondering if the extra power of uncorking lets it pull 5th at 40mph or should I drop a tooth up front? (or does the power of this bike make going smaller in front less advisable?) I have no need to go more than 70mph and I like low gearing, but then I've never had this kind of power before (dirt), and that's corked.