I have a 25ft 1995 Parker. The windshield leaks on the starboard side in the pilothouse. Where can I buy the gasket or seal that goes around the frame and the window? I have not been able to find a rubber gasket for the front window. The window opens and closes. Do I have to buy a new or used window? If I do, where can I buy a new or used window for the Parker? The dimensions of the window are 30 inches long by 18 inches high. I appreciate any help.