hey guys, i bought this 2006 CRF 250r. i'm somewhat new to MX bikes and i was curious about how it seems to run roughly in mid RPM i mostly trail ride and it rund well in lowish rpm in every gear but in 3rd-5th gear if you try cruising above what seems to be a sweet spot in the lowish rpm the bike seems to want to miss, not really bog though. It accelerates and decelerates quite well, idles great, but mid rpm cruising on long straights on trails isnt always happy. I feel that the rings are on the edge of going, as the bike burns a little oil when cool when given some gas or choke. I also feel that maybe it needs a spark plug or something to do with the ignition system. by the way I'm getting some insane spark plug prices on these things. I know its an abnormal plug but what kind of prices do you guys get. I'm in canada near ottawa ontario if that helps.