This motor's been running great all year, since I followed Joe Reeves' idle adjustment method. But I'm concerned about what seems to be unnatural vibration between about 2,000 and 2,500 RPM. It doesn't miss or anything, just vibrates -- enough to shake the whole boat. Above 3,000 it smoothes out and runs great. At idle it's a little rough but I can live with that.<br />Does this vibration seem like anything serious?
