I've always thought they were a poor design ... 'bolt on bricks' ... and if you add my preferred thumb screws, you really have a clunky looking top heavy frame. But truthfully, that doesn't bother me while shooting - just when looking at them. I ordered my thumbies from McMaster-Carr - black 3/4" for my black XT and brass 1/2" for my black LT, but now Simple sells brass versions for way less than I paid. I'd like to see someone section and remove a lot the width, it's just not on my front burner right now.
