I have a friend that has a 1968 20hp Chrysler that just recently started giving him issues. It will start on the 3rd pull and idles well, but it will bog when you give it throttle. We just discovered that if you disconnect the fuel line at the quick connect fitting, after a second or two it will run great until all the gas is gone from the line.I thought it may be getting too much fuel so we pulled the carb to clean it and adjust the float. No Change. Hopefully one of you have seen this before and can point us in the right direction. Thanks for any input.