The Sony A7IV has glue holding the lens mount in place... it's a nightmare to fix. This trend towards sealed bodies is killing the repair trade. We need laws that force companies to provide parts and manuals. Otherwise, we're all just renting gear until it breaks. It's a waste of good tech and skilled people.

Plans get drawn up by folks in air conditioned offices who might not have held a trowel in years. Following them to the letter can sometimes cause more problems than it solves. Your wall is standing solid because you used the right mud, not the one some engineer guessed at. We've all been there, sweating over a choice that goes against the book. The guilt fades when the inspector doesn't find a single crack to write up. Guess the real specs are in the work, not the paperwork.