I have two 7U Performance cases with joiners. Today I had to remove the top case, fully loaded with modules, for a photo session. If you’ve tried this, you’ll know it’s very difficult to release both joiners simultaneously and lift the (now heavy with modules) case vertically off. If one doesn’t do this absolutely straight, one joiner will get hopelessly stuck. Once stuck the release mechanism is also stuck and it takes a monumental effort to release it. This happens during reassembly as well! Today I spent about 30 mins trying to free my two cases; with both cases fully loaded, the torque on the offending joiner is immense, making the situation much worse. I had to lift both cases, now joined by one stuck joiner, in various positions to finally get the catch to move and release.
I’m curious to hear if anyone else has experienced this or whether I have a problematic case+joiner combination.