I sent my carb off to be rejeted and had a good race out the bike and left it for a week and then it would not start. Coolant in the oil, slipping sprague. Repaired all that and it still would not start. All that was left was the carb, so I removed the float chamber and I found a lot of what appeared to be creamy, light brown grease and a lot of it. Once cleaned the bike fired up nicely. Does anyone know how the hell this stuff would get into the float chamber? So I can make sure it does not happen again.