I'm working on an old Stevens 5000 SxS and need a new sight bead. Normally I'd just have it replaced with a more modern sight, but this one is drilled into the rib about a 1/4 of the diameter of the bead. If I just drill it out it would leave a significant depression in the rib, anybody know a place to get a replacement for just the white bead that I could glue back in? I tried the sewing pin method that someone else suggested but I'm having a difficult time finding the correct size. It looks like a 0.15 or 0.14 would fit correctly.