The windows all wind down properly and quickly, howver when winding them back up they stop every 2 or so inches and you have to keep using the switch over and over to fully wind them up. You can hear them click when they switch off, much like when any electric window reaches the top.

This happens to every window except the drivers window.

After a bit of reading I decided to lube one up with lithium based grease. I had the door card off anyway to fit some new speakers. Didn't make the slightest difference! They are quick during the 2 or 3 inches that they move, nothing slow about these windows at all.

I'll go buy myself another electric windows master switch but if anyone has any other ideas I'm listening.

Id go with the new modules. Just ensure they are plugged in properly before replacing them.

Turns out the windows in my Diamante need to "learn" where top and bottom is. Wind all the way down, then press down again. Wind all the way up, then press up agian. Now they work perfectly. Weird shit :\