G'day; I'm a greenhorn - just bought a 3 HP Johnson Seahorse model JW10 Ser#1096870 going by a report in this site where a JW11 was a '55, I guess maybe mine is a 54?<br />First day out, it ran like a kitten, coming back in, I clipped a stump and sheared the pin (I hope!). Back home, I pulled...