I just bought a used 1998 Glastron with a Volvo Penta 3.0 L/Cobra SX sterndrive. It has a rough idle at 700 RPM's but idles higher and a little smoother at around 1000 RPM's once warm. The whole boat shakes. It has a Hustler 14.25 x 21 3-blade prop with barely a scratch on it. The boat was...
