I can't answer your question, Igor - Bruce is the man - but you might try just cleaning the fuel tank interior, filter and fuel line, then check for simple needle and seat problems such as dirt, sunken float, or something having come adrift. Flooding can't be caused by any fault in a gravity feed carburetor other than a needle and seat/float/float arm malfunction, so a whole kit seems pointless. You may or may not need a new needle or seat, depending on what you find when you look at it after cleaning it up. I suggest you don't dismantle the whole carburetor at this point: just the float bowl. If you take everything apart you'll need new gaskets, and you'll have to go through a tuning procedure.
