I know with the HO ones you have to be very careful about doing any weathering or painting (like painting ties) around the moving points. Even the slightest change, like a thin layer of chalk weathering around them can cause them to stop moving.
Is anyone else having lots of problems with KATO tunouts? I will test them and they work fine then I put them on the layout putting them down with a very thin layer of adhesive caulk. They may work for a short while or not at all after that.The manual lever moves both manually and electrically but the points don't move. Occasionally the electrcal throw won't work but that is rarer. I know the thin wire can move out of it's slot, but just buy putting it down? I have always read how reliable they are but they have been anything but reliable for me. I have a mixture of 4's and 6's and the problems are not confined to one or the other. Any help or comments would be appreciated.