Nine months after AmBase Corp. sued JDS Development and Property Markets Group for allegedly trying to dilute its stake in the supertall condo project 111 West 57th Street, JDS and PMG has returned the favor. In a lawsuit filed in New York Supreme Court on Tuesday, the two firms accuse AmBase of withholding “consent to necessary project refinancing” unless JDS and PMG “agreed to pay defendants a sum of money to which defendants were not … [more]