I have read that a 03 cr250 will rev quicker if a 92-01 crank is installed. They said the 03 crank weighed more. Then I read a guy orders a 01 crank and weighs both and the 01 was slightly heavier. Is the weight closer to center on the 92-01 crank? I have a good 01 crank but this is a lot of work to find out if there is a difference. Has anyone tried this and can you explain the difference in cranks that allow it to rev quicker.