Hi all, I'm new to this, but working on a '73 ST90 K0 project. It's generally going well, but I ran into an issue. Per the Clymer's manual, you simply remove the points plate, remove the center bolt and the timing advance plate is supposed to come right off. However, it won't budge and I don't want to screw anything up. I've been applying WD-40 for two days now and have tried gently prying upward via various means while tapping the center shaft lightly with a hammer, but it won't budge. Any help you can provide would be much appreciated! Attached is a pic I took before removing the center bolt.