ok so tonight i replaced my sprockets with what i said i was going for. MAN my bikes gearing feels like a 600 but its a liter bike. Im saying im shifting more. it certainly does feel like it has more torque. My speedo is way off i mean like 10-12mph off. Id be going 50 and it would read 62. Has anyone ever heard of those Speedo healers? Would that cure my issue? how do you install them?