Hey guys, I was actually contemplating this base for my 209X50, but it sounds like it may not be the best idea. I'm kind of in the dark on what you're talking about with the set screw. Is there any way one of you could post a picture of what this base looks like? I really like the DD bases on my Winchester rifle, but would like to see the Encore version before buying. I have an extra set of Signature DD rings, and was hoping to put them to use on my ML, but...