Thank you for the detailed repairs with pictures...I knew nothing about Trilliums when I purchased it..I guess I got very lucky with mine..When purchasing, I looked over the frame which looked good, the door has the same issues as yours..so thank you for the great Idea on repair..
I installed a Generator
, took out the very heavy fridge
,, mounted a Ice box, removed the newly covered interior, I have all my surf and Dive gear which is always sandy and wet..and installed drain plugs in the floor so I can just hose out my interior..
I just inspected the wheel bearings,re packed them and headed south to Florida..
You have got me thinking..Over the winter, I will also pull the body, and do the same frame modifications..just for piece of mind..