Hi guys, I’ve just bought a 2009 WR450 two weeks ago and have been breaking it in. The bike is an import from the USA (I live in the UK) so I’m pretty sure the stock jetting is no good for my location (no more than 300ft above sea level). Where others have reported a hesitation when throttling it from low rpm my wr just dies, even after warming up for 5 minutes it still dies and requires choke to start again. When its been ran for a while it doesn’t die as easily but has done. Is this problem the same problem others are getting with “hesitation” only a bit more extreme or is it a completely different problem? Would the jd jetting kit and r&d power pump aid in solving this problem? Thanks for any help anyone can give me.