Looking for comments. I have a Acu trac bipod which I like very much but the range I use has concrete shooting benches and I can't get the bipod low enough unless I significantly can't the legs to get a comfortable position. Because of the length of the bench I have to can't the bipod legs back ( towards the butt of the gun and this results in a very muzzle heavy rifle. The rest I have is a Caldwell and while I can get it low enough its adjustments are somewhat crude and sloppy. The majority of my shooting at my age is from the bench. Suggestions, Has anyone modified a Caldwell rest to improve its fine adjustments or is it what it is an entry level rest.