This has probably been covered 1,000 time but here goes for 1,001. I have an 06 650 with stock gearing on it & it seems fine for every day riding. I am doing a 4,000 mile road ride this summer. I am toying with going down 1 or 2 teeth on the rear or up one on the countershaft just for the long freeway miles. What is everyones thoughts on this will it hurt the 1st gear starts, mileage or any thing else. What have you all gone to for gearing???