The fibreboard of these cases gets warped and distorted mostly from extended wetness, moisture, humidity, etc. ....and that process is quite easy to reverse with the careful use a steam iron to reform distortions and then dry iron to drive the moisture back out. Because their interior flocking was applied by nominal amounts of hide glue (the old version of modern heat-gun glues), tags and tabs would come unglued over time and are quite easy to reglue back down with modern hide glue that still lends being removeable with heat from a heat gun, or ironing out with the careful use of an iron. ~~~~~~~ Flocking tabs from a donor scrap case will provide protective tabs that should be glued over the abrasive brads that hold the "seatbelt" in; The original flocking tabs have long fallen off. ~~~~~~~ Often a joint or two in the assessory compartment need some shoring up.