It was designed to hole the Bosch Colt but will grab the Dewalt 611 enough to hold it strong, its just that its a little bigger so you will want to build out the 611 a little. I wrapped tape around a few times to build it out. I am sure there are better ways but this is just what I did and it works for me.
Thanks, Mark. I just wanted to get clarification on the shim so that when parts arrive there are no surprises.