I recently bought a Honda 10 hp on a 14' Mirrocraft. I was told it was a 1991, blue paint, yellow propeller, grey engine. Block has (197 cm3) B100S1600430 stamped on it.<br /><br /> First time out it was slow, RPM's stopped about a 1/4" past the start position so I still had 3/4 to 1 inch of...