I was cleaning the carbs on my '96 xcr sp 600 and i noticed that the jets were differant sizes. The pto side was .350 center .350 and mag side .370 so i called my buddy and asked if this was suppossed to be this way and he thought that the center one was suppossed to be run more lean than the outer two. idk if someone had taken the carbs off before me and put them on in the wrong order or what. Any thoughts would be great!!