bit of help here guys?? i want more acceleration!!! not to fussed about top end as i ride in london and very rarely even go on A roads. i guess by dropping down to 13T on the front that should help? is it feasable to go lower/ say 12 for MORE acceleration? or what about changing the rear instaed of front? i would think changing the rear to get the same effct would be better cause of less weight and rotating mas ect? what would you guys recomend/ has anyone tried for more acceleration (ie using a 13T)rather than top end which is what most seem to be trying for?