I just swapped out the fuel servo on my -4 and the original one had a screen over the intake. I liked it because even with the FAB it would potentially protect the engine from big objects. Problem is I somehow misplaced it. My question is this a standard part or something the original builder made up. If it is a standard part, where can I get one. If it was a builder option, I'm looking for suggestions on what type of screen to use and a source. I really liked it but I don't want to create a problem by making one with the wrong material. Thanks.