Thanks, Connie! My Monty is a 17' and my motor is a Nissan, but I'm sure the same principles apply. Now, as for the probability of no snow . . . I do live in Michigan . . . :-( --Craig ----- Original Message ----- From: <chbenneck@juno.com> To: <montgomery_boats@mailman.xmission.com> Sent: Thursday, February 20, 2003 9:37 PM Subject: Vibration Hi Craig, A few more thoughts from my point of view. On an M15 you aren't going to run the motor at much more than half throttle to achieve hull speed. Any more, and you just dig a big hole in the water and make waves. The waves show you how much horse power you are adding to the water. Fewer waves are better.......... All motors have a little vibration. Single cylinder a tiny bit more than two cylinder engines. It's only when you get to a 6 cylinder car engine that you find engineering harmony and a totally balanced engine. Manufacturers do a good job of balancing engines. My single cylinder Honda is delightful: no nits to pick. I have a Fulton lift mount - installed last year - and have no problem with the engine and vibration whatsoever. If you are only using your engine on the M15, there is no need for a break-in period. That idea is to keep you from taking it out of the box: putting it on the stern of the boat; filling the boat with 6 people; and then trying to pull a water skier.................. i.e., full bore operation without a break-in period. Since you are only using it to move your M15, and half throttle is about full hull speed for the M15, you are well below recommended break-in RPMs for the engine. So, just hang it on the stern, and if you have no snow, go out and play......... Connie