As P.R. stunts go, Keith Hernandez tutoring Daniel Murphy and Nick Evans on the finer points of fielding first base is more likely to pay positive dividends for the 2009 NY Mets than the club lowering a portion of Citi Field’s centerfield fence by 8 feet.   But the former is an interesting development coming a day after the Amazins announced the return of Mookie Wilson to the organization, with the former outfielder providing his baserunning expertise this spring.  It is probably just a matter of time before Captain Fucko is summoned to Port St. Lucie to school young Mets relievers on the best way to torpedo the acting manager and/or consort with suspected mobsters Why not take advantage of every piece of advice these wily veterans can provide?