I had my first problem today with my TriMark door latch on my Thor ACE 30.1. This is not the same as yours but maybe what I discovered might help you.
Three screws on inside plate and two red plastic knobs pryed straight up and inside plate easily comes off. First thing I see laying on the bottom of the opening was a piece of hard white plastic about 1"x 3/4"x .040" with 3 other small pieces. Searched well but could not quite ID where these little broken pieces had come from. This plastic was probably acting as a buffer for when the outside handle snapped Back hard. Being smacked a hundred times probably broke it to pieces and the large piece got wedged in and acted like a lock and prevented us from moving the inside handle. This might be where people are breaking the pot metal handle ?
My unit came easily off the door without any parts of springs falling out.
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