Thought this master window switch fix should be added to the master list just in case people are still having trouble with these:
http://legacygt.com/forums/showthread.php/stickey-window-switch-fixed-204451.html?t=204451&highlight=master+switch
These babies are pretty pricey, so I thought I would recognize the previous posts on the topic since I found them helpful. The first post being AWD_Warrior and the second being gt06unlimited (in order of post date).