The door cards on mine are held down with the plug/pins along the bottom edge and to get them out you need to get under them and pull them like a thumb tack or drawing pin away from the door frame. To do this you need a v-claw shape but one that spreads the load. The dealer had one of these as they do it often. I am afraid I do not have one.

Everyone loves a Morgan. Even me, unless it's broken again.