I have a DF 700 whichI bought new about 6 months ago and the "top handle" which is the casing really, seems to have some play in it. It still works ok but I don't really like the movement. I visited my retailer and looked at a new one on the shelf and there is a bit of play in it, but not as much as mine. He suggested sending it back to Festool but I wondered if it is an adjustment thing I can do myself ? I am UK based. Thanks Giff