So as the title says, I'm trying to replace my honda gx390 on my beavertail with a predator 420cc engine. I have the mounting bolts off, but ran into a problem. The crankshaft seems to be seized to the ujoint for the driveshaft. I've tried using a pry bar and also tried to use a 4 or 5 foot piece of pipe and hitting it with a 3 lb hammer to try and break it free with no luck. I've also had it soaking in pb blaster. Is there a certain way to get these parts separated or how would I do this?