I broke one of the plastic locking pieces on my 2005 Allegro Bus luggage door latches. I went to various dealers including one that was a Tiffin Dealer. No one carried them and no one could find out how to order one. While I was looking through the net I happened to find this company:
Motor Home Latches (Guaranteed for Life) RB Machining is a full service machinine shop.
They carry the correct latch ( I know because I ordered three of them and when I received them today I replaced one to make sure that it would work) The latches have metal locking pins instead of plastic and they are lifetime warrantied.
This company is a bit different they do not accept credit cards. I ordered three of the latches earlier this week and the made it from california by today. They came with an invoice so I was able to make sure they fit before I sent them a check. I am going to send them an order for new latches for the rest of my doors and then keep my old ones for ready spares if someone needs one at a rally.