FSXWX messes up clouds, all I can see is fair weather.

I recently installed FSXWX for FSX:SE. It didn't appear to work, which was fine, so I uninstalled it as instructed. But now, when I go into the sim, the only type of cloud is a fair weather cloud. If I set the weather to thunderstorms, there is lightning and rain, but no strato clouds, just fair weather skies. I then tried replacing the FSXWX cloud textures with the original cloud textures that I had backed up, but to no avail. I then tried to repair the game through steam, but that did not fix the problem. Please help, as I have tons of addons and very much would not like to have to uninstall my game.