My vent was pouring fuel. I checked it and found the screen missing. I put a new screen in (correct part number), which went in way easie than the old one came out. I checked and the screen had come out. I tried to flare it a little before reinserting and found out the bronze easily chips. What's the secret to getting a snug fit? I can't just keep pounding it in without cutting the one way duckbill valve.