O.K> I,m at work and can get on internet. I can take a carb off a good running 4t, with out an over flow issue put it on my bike it over flows. My bike runs great with any of the three carbs that I have,but they all over flow. Only work done was 300 kit. At first bike would start then die. thats why I started re-checking the work that was done everything looks good so I started changing carbs.