I replaced a switch on the x1 and it is ok -- I find that three of them need an extra press or two to function. I forgot to replace the two wires to the display and --- I was in the Dark.!!!! so I had to open it up again. I hate all those screws on the arrangers -- We need a set of hinges and a clasp ot two instead of the screws. This is important --to be able to open up and EG fix a loose wire PRONTO. Pierce