I have a 140 on a 1974 mako center console, I have owned this boat for five years with the same performance problem. It idle, boysen reed. but when I power up It takes a long time to get thru mid range, and then runs great on the high speed jets. carbs have been clean and rebuilt 3 times since I,ve owned it, the latest time too weeks ago. It,s annoying because it will fall off a plane at about 2600 rpm, thus making rough ride in any 2 foot seas. Anybody have any ideas. Thanks
