Unfortunately, I think a lot of folks don’t understand what it is to be the manufacturer of the aircraft that is under construction.
The ease of building which Vans has added into their kits has perhaps created “assemblers” and as a result has inadvertently attracted clients that are not mentally prepared to be a manufacturer and all the responsibility that comes with it.
Part of that responsibility is understanding the 3rd party major components. The operation, storage, parts, manuals and bulletins are all available. It is something that a manufacturer should have knowledge. Assemblers are not as sophisticated and as such are ignorant to the requirements.
Sorry if it sounds harsh.