I have a year 2000, 340 Sundancer. Over the weekend I went down to the boat. When I tried to unlock the door that leads from the cockpit into the cabin, the key broke off in the lock. A portion of the broken key is now stuck in the lock. I’ve tried everything I know of to try to get the key out and it still remains inside the lock. 1. Does anyone have any ideas on how I can get it out? 2. If I have to buy a whole new lock assembly, does anyone know where I can get that new lock assembly from? thanks.