Wild Goose

Hey guys, this sounds like the same thing my boat (98 Challenger 1800) was doing at the start of last year, but only the port side engine as I recall. Basically I would open up the throttles and the engines would run up to about 4 or 5,000 rpm and stay there, the starboard would continue to climb slowly and get the boat on plane, and the port would kick in like a turbo unexpectedly and I'd be off and running with both at 7,000. Sometimes the port engine would hunt between 7000 and 5000, generally giving a very uncomfortable and unpredictible ride. After about an hour or two of running the boat, the issue cleared up, but I can only assume it will come back to haunt me this spring, and I also want to resolve it before I do any damage. Because it cleared up, and my Sea Doo is used so infrequently (about 1 or 2 tanks of fuel a season) I am assuming it is gummed carbs or a fuel delivery problem. I have also not cleaned the RAVE valves since I have owned the boat, so I plan to do that along with the carbs and lines (in my free time - as if I have any!). Does anyone out there have any ideas? While I am in there, I don't want to miss something simple. Much like the original post, this is not a drive line problem, because when I got full RPM range, the boat performs like a champ.