The New Milford Zoning Board held another public hearing on plan to turn the former Pettibone School into a community center.  A decision must be made by August since the application was submitted in early May.  Mayor David Gronbach is seeking a special-use permit for the project, where about 95 percent of the interior renovations have already been completed.  Some Republican Town Council members accused Gronbach has tried to circumvent the zoning process.  Money from the Waste Management Fund has been used to pay for renovations and improvements.