I recently acquired a 1966 Larson Lapline with a Mercruiser 110 engine. I’ve worked on engines most of my life, but have a stupid question that I need to ask someone - and I’m hoping that you experts might have the answer or know someone who does. The engine was running a bit rough. I found the plugs a little worn and replaced them. I changed the air and fuel filters and checked the carb bowl and jets for debris and everything looked good. The distributor cap and rotor are both corroded so I’d like to replace them (recommended source?). My stupid question is how in the heck does the rotor come off? I can slide it up and down on the shaft, but it doesn’t come off. I don’t see any type of stop screw, retaining pin, keyway or any other type of retention mechanism. After removing everything that looked like it might hold the rotor shaft, I now have a collection of springs, levers and Lord knows what else floating loose below the timing plate that I can’t attempt to reconnect because the plate can’t be removed unless the rotor is removed first. Any tips would be greatly appreciated! Thanks. Joe