Dreamflight767 wrote on Jun 23^rd, 2019 at 10:50pm:

Sorry.  Still confused.  If this is a full install, what do I need to uninstall first?  And why is 1404 not available to all models?

I believe you need to uninstall the current expansions and the latest PW base pack, then apply the 1.404 PW update, followed by the 1.400 expansions (same files that you have just uninstalled).

As Mark says in reply #3, the systems programming across all the variants is applied in the PW panel folder, therefore the RR/300/F will already depend on those new gauge files without its own update file. The 1.400 is still the latest expansion version for this reason.

Hope this helps  :)