I have a problem with my 04' Road King Custom EFI. The front cylinder is running real rich and the rear cylinder is running real lean. I have S&S head. I did a leak down test and both cylinders are at about 2%. I pulled the injector and cleaned them by back flushing. I swapped the spark plug wires and the plugs. After all this being done the cylinders are rich and lean with no change. If I rev the engine to 3000 rpm the AFR in both cylinders gets in range. Any help would be appreciated. Oh I have Daytona Twin Tech TCFI.