Thanks Ken it will help in getting the cut out close and also help double check my measurements. I should br getting my Ultimate soon. Tom said it was sent out a couple of days ago, but I have seen it.The spacer with the stand offs is about the same with the 540 Edge.I took some round aluminum,center driled it and cut off 1/4 inch washers to space my DA-50.I'll do the same on the Ultimate.Keep up the good thread and don't worry about the time. I had my 540 Edge about 6 months [sm=bananahead.gif] before I got to fly it. I's well worth the wait!!!