I need an entire carb. or I have to find someone that carries more than the usual repair kit parts. The brass tube that runs vertically through the venturi section of the carb. is totally destroyed by corrosion. The bottom end of this tube is down in the carb. bowl with the main jet and the top end is up near the mixture adjustment needle. I have tried the Sierra repair kit #18-7223 but it does not contain the parts I need.<br /><br />Anyone have an idea where to look for parts or an entire carb?<br /><br />1988 Johnson, 4 hp, Model #J4RCCS, Serial #B 7625947