I have a tiller 25 hp yamaha 4 stroke I bought new in Jan, but never got into the water till april. Got maybe 6 hours on it. Not particularly pleased with the way it runs. MUCH rougher than any outboard I have ever owned. I kind of expected it to be a lot smoother. Shakes pretty good at idle.....and worse just off idle. Top speed and overall power seems fine. My question essentially is, is this normal? I have no other small yamahas here to compare to mine. Havent had much luck yet getting a yamaha dealer to have a look at it yet, and one dealer told me that if there was a carb problem that it wasn't covered by warranty. REALLY? Literally been a month trying to find a semi local dealer that will actually agree look at it. (Dealer I purchased from is 4.5 hours away.). Just trying to find out if I indeed have a problem, or its just the way it is. Any input from owners of smaller tiller Yamaha's appreciated. thanks in advance...