Hey Mad, I simply followed some threads over at TotalRuckus/BigRuckus section/in the Performence section, is all the info to do my BigRuckus.
Since mines a 250cc, I doubt jet sizes will be the same or roller weight configuration.
I got my jets from JetRus.
I also found when I was looking for how to, this roller guide, if it helps you at all.
http://www.beedspeed.com/html-pages/...ghts-chart.htm
Best to ya.