I have a Bosch laser measure that I use. I assume that's what the D1 does? I'm thinking of keeping them in the corners as they are now. I had some more depth with the Treo set up that Bob saw, but Johnny does know what he's doing. I need to get the Hunter Douglas acoustic shade for the side window and the back wall smaller one. That will be a start. I think Richard said that with the 3" granite, so add the rest of the 4 washers to the rear spike. That sounds about right I would think.