I have checked the FAQ's and suggested resources. Found related problems but not exact. I am at my wits end. We have a brand new 19' Trophy CC with a new 125 Mercury outboard. This boat has 14 hours on it and I have been following the break-in procedure (varying RPM and NO WOT). Since the first outing I've been experiencing what I would have to term as an engine miss at higher RPM (3000 to 4000). It's like you're moving along just fine and then the engine skips a beat or two and you feel the momentum of the boat slow and then pick right back up again. I would also describe it as the same feeling as if you were in shallow water and the prop hits the sandy bottom. The problem has been very intermittent and would always clear itself right up with no more problems so I've been waiting to take it in for the first service before saying anything. Well, today we went out and I am quite concerned. The problem has dramatically worsened. We went about 20 miles down the Wicomico River with no problems. Then it started the missing badly at around 3800 RPM. The engine bucks and you can see the tach dropping 400 to 500 RPM and then picking up again. It was really bad! This time we had to stop before continuing on because it wouldn't clear itself as it had done before. I found that by stopping and going just 6 to 10 MPH for a few minutes that I could then pickup the throttle and go 3,800 to 4,000 RPM for about 3 minutes and then it would start missing again. It took us a long time to get back to the marina but I did not want to cause any damage to the engine. I am not getting any other abnormal readings on the gauges. I don't know if this problem is fuel or fire related and I also know that it is impossible to diagnose a problem by my simple and uneducated description. I was simply hoping that someone out there may have had some similar problem and could shed some light on the subject for me. NOTE: I have returned to the dealer since writing this and they checked what they said was the obvious (fuel bulb, fuel venting, etc.) and also ran it in the test tank and on the dyno. They found one carb out of sync and repaired that and said that I should be fine. I left the dealer and went right to the river for a test run. Ran GREAT for 30 minutes and then started missing and bucking at higher RPM range. Again reduced RPM to 1,800 for 5 minutes and then could pickup RPM for 3 or 4 minutes before the problem returned. It's back at the dealer and we've been waiting for better weather as they said they want to take the boat on the water for further diagnosis. Any ideas? Thank you.