I have fitted the unit. It worked for a short while, but then I started getting problems with not being able to manually operate the windows & the RH window not closing. I was sent the wrong LHD unit (key-fob version) and tried the controller from that package. It did the same, I couldn't get the manual switches to work. I did the open window, close window, starting with the RH drivers window, but noting. Am I doing something wrong, please?