Although summary judgment is not appropriate in a malpractice action where the parties submit conflicting expert opinions, “expert opinions that are conclusory, speculative, or unsupported by the record are insufficient to raise triable issues of fact” (Longhi v Lewit, 187 AD3d 873, 877 [internal quotation marks omitted]; see Lowe v Japal, 170 AD3d 701, 702). [read post]