I have a 75 25hp Johnson motor. It runs rough and won't idle low. It has no power under load. I've replaced all the coils, replaced condensers and points, new spark plugs, and fully cleaned out the carby. I'm at a lose as to y it is still running the same as it was before all the new parts. There plenty of compression too. Points are set too .020 and plugs are set to .030. Any help would be greatly appreciated. I have read through most of the forums already written about this. And I have done every thing it has told me. Still problems.