Well, I’m glad I took pictures when I disassembled my single pin on my new sight - or else I’d be in panic mode. Couldn’t find any .010 fiber except on Amazon as most bow shops were out or didn’t sell it. If you ever do this, it’s worth studying or watching a couple videos before you DIY. Sure do like and can tell the difference between the two sizes though! The .019 was easier to see, but it was covering too much past 30 yds.