After the first 5 minutes of the day cruising on full throttle (which is needed to even plane on a bw rage 15 jet), my engine revs drop from around 5200 to 4700 RPM. After the initial drop it seems like every 2 minutes or so I get the short boost of power backup to 5200 RPM but then quickly drops to 4700 again. Unfortunately with this little power I can't even plane out with 4-5 people in the boat!<br /><br />I am thinking it is a cold/warm temperature/thermostat issue. A couple more things that might help:<br /><br />-- yesterday after we had cut the engine and been sitting around for 30-40 minutes, I turned the key and got the continuous overheating horn, when the engine was obviously not overheated. After turning the key back and forth I got it to operate normally. Weird! We quickly motored back to launch ramp.<br /><br />-- I think the "temperature switch" is located around the heads on the starboard side of the engine. Coming out of the harness there is a orange wire that goes into the head. There is also a black wire coming out of the harness that has a connector, but isn't connected! Is there supposed to be another wire coming out of the head for this to connect to?<br /><br />Anyone have any ideas or suggestions on how to attack this one? Thanks in advance!