Thanks for offering to help, I bought the saw in 2010 March/April
There is just one thing I have noticed : The switch box has 3 screws to remove it with a standard pozzidrive but to dismantle the box is not possible as it is fixed with star drive screws with a security device that renders them un-turnable. i.e it wont allow the star bit to go in the socket.
Just to say, I have got to get on with other things now and I will use my old saw for the time being and get this sorted later. It ll take some time to get my head around the Dewalt web site i will let you know how I get on
bye for now . Adrian