We have a 1987 3300 open and have had issues with the cabin door. The handle pops off all the time on the inside and the door is hard to open at times. It will then pop out from the frame of the door and the plexi glass or whatever the door is made of is separated from the frame of the door. They do not make our part anymore i asked Tiara so wondering if anyone else had this problem and what they did or what they bought to replace it.
Do you know which part is broken and do you have the broken pieces? If so, you could try taking it to a local machine shop or machinest if you know one.