When we bought my bike, 2007 CRF250R, it came with a JD Jet kit the guy never used because he didn't see a need to. Well, seeing as I get to ride for the first time in 4 and a half months, I decided to dig it out of the box and do some research. Figure i'd start here. Does anyone have a jet kit? What are the benefits/disadvantages? Also, sorry if this is the wrong forum. I figured since I'm asking about the kit, not the bike, it would go here. TIA!