I’m sure they can be adjusted but honestly, I’m pretty sure those bindings would be on the indemnified list...meaning no shop will adjust them. Every binding manufacture puts out a list of binding models each year that are indemnified and insurance companies of shops/ski areas won’t touch those for liability issues. Shops typically take it very seriously. You can certainly still make the choice to ski them, but no one will work on them (ie adjust them for you). It may be time for new equipment.
Look at fall ski swaps (though who knows how those happen in COVID times) for used equipment, or I bet there are still a decent amount of places sitting on used demo equipment from last year that they couldn’t unload at the end of last winter because of COVID closures during that normal sale time in the late spring. For example at Stowe you often can get used demo skis for $150-$250 with bindings... when that gear new is like $700+ set ups.
Here’s a quick run down on indemnified bindings:
Each season the ski industry releases a list of “indemnified bindings” by manufacturers. This means there are actually bindings each year that, according to the manufacturers, cannot be skied anymore due to safety issues. Bindings simply wear out.