When I removed my carb (2100 2V), the recess on the left side of the intake was full of gas. It doesn't go anywhere as far as I can tell but I don't think it should have been full of gas. I just fired this engine for the first time a few weeks ago. I rebuilt the carb about a year and a half ago and it sat until the recent engine break-in. Does it sound like the float was sticking? Before I started the engine, I filled the float bowl through the vent on top of the carb. I may have overfilled it. Any idea on how the gas got in there? Is it abnormal for that recess to be full of gas?