I had a friend watch the wire as I was shooting. She verified that there was some flex in the wire. This was a rather fine wire. It seems that the flex was the same every time thus a great deal of error is not present and I'll bet the fine wire would work very well at 20 yds. None the less, I am going to get a bit stouter wire. I fear that the good groups I am shooting at 20 yds might not hold up at 80 yds (respective to the distance of course, when I start shooting 2&1/2" to 3" groups at 80 yds you will be the first to know
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I moved up two sizes wire. We confirmed that there was no visible flex in the clicker wire at that diameter. I will mic the wire and give ya the diameter. I will say that learning to shoot the clicker (at least for me) was not easy since I am a string walker and draw the arrow different lengths with different crawls. David Hughes helped me work out the problems. He solves the problem using his drawing shoulder. Moving the shoulder in or out depending on the distance. It is a skill that took me a bit of practice to get down. It helps beyond anything possible to have a shooter of David's caliber to help with the coaching.
String walking is easy to learn and become pretty good at. Alas it takes some advice and coaching (IMO) to become real good at
Agian let me say your equipment can give you a step up or it can make your life very complicated. It is a stroke of luck for string walker that Border is in the process of exploring custom ILF limbs. If any style of target shooting can take advantage of tweaking a limb, it is the string walking target shooters.
rusty