I fitted a four-way Oak Grigsby to my tele to add the series position. The stock pitbull control plate slot didn't allow enough travel for that switch, so I had to extend the slot and shave a little off the switch lever. If I'd though about it, I would probably have gone with the push-pull instead, although if that's a full size pot, it might present it's opwn problems with regard to control cavity size and control plate positioning.