Thank you for your comment! If you find the sheet section separating from the backing, you can order "Legal-Pad-Binding" next time, where the sheets are stitched to backing, then sheets are perforated for removal. These are made for padfolios where the backing stays stable yet the sheets torque left and right then eventually separate. We also find when engineers in the field tend to toss their pads about in the truck, the same applies.