What I have is a 3/4 inch wide flat bottom benchrest stock. I would like to know what the prefered spacing between the ears would be, also where to ride the stock? On the stitching or up a little. I'm looking at the SEB bag, Ernie has 1/2 inch in stock and if they make me 1 of a different size it should be 6 weeks or so. I'm in no hurry so the wait does not bother me. I like this bag over the others. Thank you for any info given.