Hi guys, I have an 06 Yz450 Im scratching my head on. The bike wont start, I have good compression, 2% leak down, spark is good (even replaced plug), intake lash is .178mm exhaust is .203mm (little loose on intake tight on exhaust but shouldnt prevent starting) Ive checked the timing a dozen times, compression release is working properly... Im confused that there is good compression and spark, I can see the accellerator pump squirt its shot through the carb body visually, but for my peace of mind I wanted to hear it try to fire so I sprayed starter fluid in the intake. After a dozen kicks I got a backfire, but it didnt try to run. Ive kicked it hundreds of times, but im getting nothing?? Any suggestions are appeciated! Thanks TT!