I am sure I have another posting tagged on to some one else here somewhere. But this is a fresh issue, so here it goes. Last 2 weeks I noticed the starboard engine RPM is a bit on high side now. Been dealing with port side issues, hate to start on starboard side. Basically when starts RPM is at about 1000 RPM, where as port side is about 800 RPM. Before they used to be same. I don't hear anything funny from the engines. I know port side still has fuel issues, I am dealing with that. But starboard side RPM goes up slight touch on the throttle. So when both engines are, let say, 2500 RPM, the throttle lever on port is considerable amount higher than starboard side. So this weekend I decided to floor it, and pushed it all the way on both, I did get 20+ knots, which good. Port side stopped going past about 3200 RPM but was stable and steady. Starboard side went out to 5000 RPM. The sync gauge was somewhat centered. I did not hear wild sounds from either engine. So what could this be? After I went down to about 2500 RPM, though throttle levers for both engines were equal and when I went neutral both engines were at about 800 maybe 900 RPM. So could it be gauge? or because I did not use it so much needs to clear out by maxing the engines every so often? Would fuel issue cause it? on port side fuel issues cause RPM gauge to go up and down. The starboard side has no weird movements, just looks like high RPM last 2 weeks or so.