I have a 1984 Hunter 34 and I need to replace the port screens. The ports are Gray Enterprises and I have taken measurements of the screens that I need but I don't understand the measurements (inside diameter, cutout size, base outside diameter, spigot lentgh, angle or straight spigot, etc.) that the web site is asking for. My screens (not the ports) measure 3 7/8" x 13 7/8" and 4 7/8" x 11 7/8". Can someone tell me what I need to order to replace these. Thanks,