When they no longer have a part in stock they normally do not list a price and they are listing a price so:
Go to this web site (
Service Documents) and select the DTI RV parts company link just above the table of manuals
In the "Search by Category" drop down select Refrigerators
In the search tree select Dometic Refrigerator
In the search tree scroll down and select Rm760
In the search tree select Cabinet Asembly
Parts are listed with prices. You can see the diagram by selecting show diagram
Call them using the number listed at the bottom of the screen for parts availability. You may have luck given that the prices are listed.
Good Luck
Dave