hi all, i love the '02 crf but would like a greater range between 1st and 5th, i.e. like the crf450x. For memory the difference is only about double the ratio, whereas the x model is more like 3 i think. Has anyone changed any gears over on the stock model with those from the x, is it possible? (i think it would be). even if i gear up 5th to make it like an 'overdrive'.