1. Does EW offer product #50216 ZP in BB/CC?
2. How smooth is smooth enough when block sanding? I started with 120 grit and worked down to 180. The surface feels very smooth to the touch and flat when wet, but should I go over it again with an even smaller grit. If yes, what grit should I use?
BTW: The primer is 3 coats of EW Urethane over 2 coats of EW Epoxy.