I've been racing off and on (more off than on at times) since the days of my youth in socal and have had almost every generation of Novak ESC since the .4 to now the GTB. I never had an issue and the speedos have been bombproof in my experience. The instructions/manuals were clearly laid out and whenever I had a question I got a response very quickly.
-Xray T4 '16/Xray X12 '16
-2010 Cincinnati Beer Mile Champion