Disassembling and then returning a knife is deeply ugly. Once you've mucked around with it, it's yours. And it's even worse that dealers are saddling you with these after accepting a bad return, particularly after you just raised MAP to help them out. Seems like a pretty crappy thing to do to the company. And for what it's worth, I have zero problems with dealers saying "You take it apart, you bought it". Case closed.
You all likely know where I stand on knife disassembly, obviously, and that I'm a big advocate for being able to maintain one's own tools. A tool that you can't maintain isn't yours, it's just rented from fate. And a return to red loctite and a warranty-voided-by-disassembly policy would likely take Spyderco off of my table for good. And of course, given that many other makers have unrestrictive warranties and reasonably-locked-tite screws and have stayed in business despite using them, there must be another solution. And for what it's worth, I think selling (not necessarily sending for free) internal parts could well be a part of the solution. Sell maintenance kits, if you must, which comes with all the hardware and washers and such for a given model. That's a nice middle ground.
But given that I probably have some role in this, as an advocate for disassembly, this is a nice reminder to post a discussion video to this end, basically saying exactly what I said above: Once you take a knife apart, it's yours. Warranty issues happening down the road due to manufacturing defects aside, you tune it, you bought it. Sleazes gonna sleaze, and this is where dealers need to put their feet down, but this is something I'd assumed people just understood. And it seems that they don't. Oh, humans.