My wife and I combined are over 400lb and we often end up with a kid or two that would put us over 500lb in the bed and with the fix it is solid.
The plywood was changed out for 1/2" (typo in my original post) and support added at the front wall and near the foot so that the frame is supported instead of just the plywood. When I was thinking about fixing it myself I was going to add a divider wall to partition the under bed storage and the pass through and provide support across the middle of the bed. Don't need it now.
