Hey guys! I'm having a problem with my 05' WR450. A couple of months ago I was riding every weekend with 0 issues. 2 weeks ago after it had been sitting for a month I went outside and fired it up. It started right up with the choke on. It ran for a minute, then turned the choke off, and then it died. After it died it took over 100 kicks to get it going again! Once I got it going, I left the choke on until it was nice and hot it stayed running. This happened again last weekend (1 week between rides). It started right up then died, then 100 kicks and it started again and warmed up with the choke on and only with the choke on. Once the bike is warm it will start with the starter pretty quickly. I'm jetted at 168 and have not changed this in over 2 years so I don't think it is the weather affecting this. Can someone please tell me where to start looking? It is driving me crazy!! Thanks ya'll!