Theatre UnCorked at BCA Plaza Theatre, Boston, MA. ** out of 5. Handsome but inert staging of James Goldman’s problematic play about the original family feud of 1183 A.D, Henry II vs. Eleanor of Aquitaine vs. their three misbegotten sons. Blending Goldman’s anachronistically bitchy, self-conscious one-liners with the plot’s titanic issues of statecraft is hard enough. But the task is complicated by director Allison Olivia Choat’s opting for psychological realism. Leisurely pacing and too-often muttered dialogue flatten out the theatrics, which (as the famous 1968 film demonstrates) practically demand a robust attack. Anthony Mullin’s Henry, in particular, shuffles his feet and suffers nobly but is lacking in stature, gusto and lionesque temperament. That said, a bold Prince Richard from Thain Emrys Bertin, and a superbly conspiratorial Eleanor from Sehnaz Dirik, could’ve pointed the way. They pull out all the melodramatic stops while remaining true to interior character, setting off the fireworks that are elsewhere lacking. Richard Itczak’s excellent costumes look as if the characters actually do live in them, and though the too-vast stage expanse works against the story’s pressure-cooker atmosphere, Leonard Chasse’s set and Eric Fox’s lighting contribute to the right mood. (Photo of Sehnaz Dirik and Anthony Mullin by Gary Ng.)