I broke down my carbs completely and I pulled out the main jets. Now I got the Kawa book and the book states that 1&4 carbs are 145 and 2&3 are 150, well when I pulled these guys out they were all 150's. A friend of mine gave me a kit with numerous jets all ranging from 155-162.5. My question is if I were to place the larger size jets in woudl this cause a prb or make it run better. And when it comes to the numbering of the carbs do they read 1-2-3-4 or in some different combination? When I put the old jets back in it started up and ran, then died for 10 mins then started back up. It seems to run good now, but with this cold weather I havn't had a chance to really ride it.