After 20 years I finally decided to put a flame arrestor on my reproduction 396 open element air cleaner. I just noticed that the tube is installed at an angle in the base and the top of the tube is cut at an angle so it will be parallel with the base. But, when I slide the flame arrestor on the tube, the screen sits at an angle. Is this normal or correct? I have never owned an original air cleaner assembly so I do know what it is suppose to look like. One other thing, do any of you put epoxy or lock-tite on this arrestor to keep it from falling off? My is not an interference fit so, it would be easy for this thing to vibrate off. Any help on this mystery would be greatly appreciated. Please view attached pictures.