Im not necessarily looking into this kit, but i have an issue with my 2003 kx 250. Yesterday i took her out and ran her up the street for a short period of time. Actually, i just bought her yesterday morning for i believe a really good deal. She started and ran awesome. I will admit this is my first 2t ever so i do not know much about them. Ive been a street bike guy for many years and have recently gotten into moto. Anyways, this morning, which by the way its about 35 and below here in st louis mo. i started her and she immediately died. I checked to see if the fuel was on and indeed it was choke was pulled up, ready to go. Did the same thing after like 15 kicks. played with the choke more and admittedly im just spoiled by fuel injection and dont really know what im touching lol. I did get her to start and run but once i put her in gear she stalled. Thats when i discovered i had the choke still on or in the compressed/down position. Cool, i take her up the street again today and shes not pulling like she was the day before...in any gear. full throttle makes it worse. Also, shes smoking pretty bad and basically spitting black oil out the silencer and is actually running down the under side of it. Its all over my rear fender as well. But even after that she starts first kick and runs at idle well. Did i just screw something up with the choke or what? Any help would be appreciated? Sorry, bout the length and punctuation just trying to give as many details as possible from what i observed. will post pics soon also!