I think most skiers get to this point with their favorite skis and its hard but safer to retire them. I think once the bindings will no longer be tested by shops these should not be used. And the skis will dry up and loose their elasticity and pop over time. The skis may look brand new but they are not. Its not the performance as much as safety. What is a ACL injury worth ? and how would it affect your life ? Would you let a loved one ski on that gear ? That is the potential risk. The same happens in every sport that relies of gear and its hard to discard virtually new gear. Its just prudent to retire rather than risk a catastrophic failure. Just my opinion.