I can only guess at why these didn't meet up as it appears they "should" have. It may be that the factory assumed that the strength was sufficient, and it may have been when these were new trailers. After all 5/8" plywood is very strong until it gets wet and starts to deteriorate. My door wouldn't close well every time and I could see the door frame flex when I pulled and pushed on the front part of the jamb near the floor. It will add strength with these two parts attached together, I'm sure.
Rich
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