I had the inside handle of the dead bolt fail while I was inside the coach. Kinda scary when you can't open the door from the INSIDE. No problem, just take the latch apart with the tools I keep in the rig. WRONG, the door latch uses a TORXS type screw.
Called the dealer to get a new handle, right. WRONG, they need to send the whole door latch assembly... Parts guys says it costs $400... do you believe that.
The real problem is a poorly design knob. It's plastic with a metal insert. Very easy to break if you put a bit to much pressure on it. If you have this style door latch then watch out.
OBTW - It is made by Trimark of New Hampton, IA.
As always my RV mods/fixes are on my Yahoo Photo site (link in my signature).