This is a long overdue issue I have been ignoring. (yea I know, shame on me) So here are the specifics. 1996 Carb Mariner Offshore 150. Boat can sit for a month, prime bulb, choke, and starts on the first or second try. Starts and idles out of gear brilliantly. Idles in gear well. No complaints for a 17 year old two stroke. From idle to about 1700ish RPM boat does not exhibit any problems. Some minor hesitation from time to time but nothing of concern. Above 2000 RPM Boar runs clean. Instant throttle response all the way to WOT. WOT with SS prop is about 5600/5700 RPM. Boat can hit 50mph with a light load. The problem is from about 1700ish RPM to about 2000ish RPM. Boat hesitates, (possible miss can not confirm) Sometimes bogs down. This is where the boat is trying to get on plane. It just plain runs rough. Difficult to get on plane due to possible miss and hesitation. Before I just start swapping parts I'm looking for suggestions on troubleshooting ideas. Also with a smaller prop (too small will hit rev limiter) the engine can wind up the RPM's quicker and it get's over the 2K RPM hump thus problem does not manifest itself as prominently. Thanks.