Have you talked to the factorey? They should know how to change them.
I also found this.
The latch fix was very easy. Open the door and take off the molded cover in the center of the door to expose the handle/opening mechanism. You will see the rods that go to the side of the door to operate the latch -- one going to each side. I used a pair of needle nose plyers to snap off the retainer spring and then removed the end of the rod from the door opening cam. My door is foam filled so I did not have to worry about the rod falling into the door. Drill out the rivets from the edge of the door and then the whole "mechanism" will slide out. Make sure you put the rod into the same hole on the new latch, slide it back in, threading the rod to where it needs to be and pop rivet the new latch into place. Reconnect the metal retainer spring, put the plastic cover back into place and the job is done. It takes about 10 minutes a latch. If I did not have the foam in the door, I would tie a piece of small strong cord to the latch rod when it was removed and then you can pull / guide it back into place when the new latching mechanism is put on the end (will also prevent the rod from falling into the door and then -- you will have to take the door apart to get the rod back). Actually this is a very easy fix.
2008 Newmar Mountain Aire
450 HP Cummins ISM 4000MH Allison Trans.
Towing a 2014 Honda CRV with a Blue Ox tow bar.