Fig. 2 - TT-1 shelf frame and first mods - underside view - The TT-1 model has only the one slightly diagonal strut in the center to stiffen the horizontal shelf frame. The mass of all items I was planning to add would push close to the approx 55 lb design load limit. I constructed 2 additional strut assemblies that could be installed to help carry/stiffen the load. These strut assembly's positions can be seen more clearly in fig 4)

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