I've had one ball drilled at nationals, a Frankie May Gryphon, last year at Albequerque(?), by Frankie May himself(great guy, a veritable fount of knowledge). The fit was perfect, span & pitches were right on. My choice of ball, layout & cover prep? Not so good. It was too much ball for the amount of oil out there, and polishing it wasn't any good either. Oh, well. Live and learn.
drillbit