I bought a 07 with the gytr ais kit in it already. Ive had a 07 wr450 and a 09 yz450 all with JD kits and both run prefect. This bike with the gytr needle out and the JD needle, pj and main get changed to what i had before is not working like the other bikes. My thought is that the gytr kit changes the leak or starter jet. If so I want to change them back to stock. I just dont know what comes in the gytr kit.