Just received my feedback- I found it to be extremely helpful and something to build off of....especially the smoothness/consistency when I have 3 waggles vs 2. Also the feedback that my backstroke is a little off line. going to dig in more on that, as it obviously can have an impact on...
I've played with the FG 57 for a few months now. Really like it. I'm getting a new tip put on. Had a kamui clear black soft on it but had a spot on the center of the tip that kept glazing.