I am currently in the process of removing a bad piston. From what I've learned I had to remove the flywheel/distributor cap/rotor, and now I'm at the bottom of the distributor and I'm stuck. There is some sort of pressed on ring on the end of the crankshaft and the bottom of the distributor is stuck on that piece and I need to know how to remove it. I have a manual on this engine but it does not tell me how to remove it. Could someone please help me out and let me know what must be done next. I need to split the crankcase and the top cover is the only thing holding me back. On the 3rd picture is the plate I'm trying to remove. Thanks.