I'm running into the same issue, I can get it to slide out a bit but then it jams and won't come all the way off. I tried giving it a couple whacks but now it sticks a bit when I push it all the way back onto the clutch and sort of clicks and doesn't rotate as freely as it did when it's all the way on.
I did make the mistake of putting the washer and nut on and torquing them to spec without the bushing in (got distracted in between putting everything in) so not sure if that might have caused it. I've tried just sliding the bushing into place but now it won't go all the way in either. I'm hoping I didn't mess up the crankshaft when I put it back together wrong.
Oh I should probably also mention this is on a PA50I.
Anyone have any thoughts? (edited)