We have a 642B with the Mitsubishi 4G32 engine. It does not idle well and the engine does not respond to carb adjustments. We need to get in the carb and clean it. The local dealer wants insane money for a kit. I've tried local carb shops and on line shops as well. None want to deal with the Solex carb or can identify it. The last one told me the carb is tailored to this particular installation and an automotive kit won't work. There has to be another option to $206 from our local dealer. The carb is wierd, a two barrel casting with one side plugged to make it a single barrel. I would be happy to have an automotive kit for a carb with the same castings. Any help with specifics on what to buy or where to call would be a great help. Thanks in advance, Vince