At any rate, a judge should not be experiencing a 20 or less at the June final round, especially if the beer scored 30+ in April.
The first time I judged final round was in Orlando with you. We judged bocks. I recall both of us saying how disappointed we were in the overall quality of them.
As a data point, I hand delivered my entries (assistant organizer, so I just walked them to the cooler) in KC. I entered 4 beers and advanced 2. 50%, not bad right? Anyway, I have a "clone" of Boulevard's Saison-Brett, a beer you likely cannot get outside of the Midwest. I enter it in 16E with the description, "Saison with dregs from Boulevard's Saison-Brett". In the Midwest, it cleans up in competition. At a recent comp, Stan H. commented something to the effect of "Excellent beer, the brewers at Boulevard would be happy to know that this is how their beers are being used." It placed first at the KC NHC Regional over 68 entries in Belgian & French.
It got a 30 in Philly. It averages a 40.3 in the comps it's been to here in the Midwest.
Perhaps it's a combination of shipping times/heat, regional knowledge and a bit of voodoo? FWIW, I judged at the 2012 finals and was surprised at the lack of really great beer as well.