FX Impact Regulator Repair Videos

I've been watching the several Youtube videos on FX Impact regulator repair. One of the videos I watched was this one
produced by Airguns of Arizona. In the video the gentleman strongly claims that performing his procedure will void the warranty. Perhaps this was the FX-USA policy six years ago when it was produced but it is NOT their policy now. Indeed FX-USA claims "Installing the brass regulator piston yourself will not affect your warranty in anyway. We encourage our customers to work on their rifles so they become more familiar with them and get comfortable working on them." So I encourage everyone using Youtube (we all do!) to check the production dates of the videos to attempt to make sure the information is still valid.

ALSO - Airguns of Arizona is no longer an FX dealer. Does anyone know why?
 
I would watch the the most recent videos as the regulators have changed since the video was made.

AOA was the sole dealer and service center for FX guns back in the days, not sure why they made a video on how to do something they tell you not to do in the same video. Today FX is sold at many many dealers that signed up with FX, not sure if that has anything to do with AOA not selling FX anymore but who cares at this point.