@bellebe Thanks. I have both book and app. Now wish I’d held off on the book purchase as the app does everything I need. Always good to have a paper backup though for when the i dies.
You mention 12 and 2. The big thing for me is bringing the highs down from the high teens to below 13. My chart now resembles a kiddie-friendly rollercoaster instead of the Pepsi Max Big One it used to be.
Well done on your 6.4; I bow at your feet for your fantastic control 