By Evan Dawson, Finger Lakes CorrespondentPhoto by Morgan Dawson I nearly sprinted down to my basement — ahem, cellar — when Lenn made a bit of a shocking announcement last week: His 2007 Ravines Argetsinger Riesling was closed with a synthetic cork. This is a very highly regarded wine (Lenn included it in his 2008 wines of the year) and it seems destined to improve with time. Wine Spectator gave it 89 points and advised readers to "drink now through 2009;" I found that assessment to be wholly misguided and actually wrote, in silver marker, the words "drink after 2020"…