General manager Sandy Alderson spoke on SNY during Tuesday night’s Mets broadcast, acknowledging his disappointment at the seasons several core players are having, saying “At this point, we’re going to live with Ike [Davis] for a little bit longer.’’ Davis was 0-for-3 last night, grounding out with men on second and third to end the fourth inning. The badly-struggling first baseman is 0-for-his-last-24 with men in scoring position; and after going 1-for-36 with 13 strikeouts over his last 10 games, has seen his average fall down to just .149. Alderson was unclear about how much “a bit longer” is, but it’s clear Davis is on thin ice and a demotion is possible. If that happens the Mets could put Daniel Murphy at first base, which would allow them to finally get Jordany Valdespin on the field at second base. Alderson added highly touted pitching prospect Zack Wheeler will start Wednesday for Triple-A Las Vegas in Iowa, his first appearance since May 11 due to mild inflammation of the AC joint in his right shoulder. Alderson expects Wheeler to start every five days going forward, and hopes he’s in line for a promotion after two or three outings. Alderson preached caution concerning Travis d’Arnaud since the minor league catcher has played so few games in the past year due to injuries, but hopes he can be playing by July 1. Alderson added authoritatively if d’Arnaud is healthy he will be in the majors this season. He also singled out pitcher Rafael Montero as another prospect who could get promoted. * The day after the devastating tornado that ripped through Moore, Okla., Mets pitcher Jeremy Hefner — who grew up just a mile from where the tornado hit the hardest, and still has family in and around the area — said all his family members are safe. “It’s good, everyone was safe. I had a cousin that was three blocks away from the path of the storm, but his house was fine,’’ said Hefner, who now lives in Tulsa. “But that’s the way tornados work — one side of the street completely gone, and the other side of the street perfectly fine.’’