Sponsored Links (Register now to hide all advertisements)
Just over size the holes to what you like, I used a step drill and made the center tiny holes larger, in steps.
As for the magnet, your choice, most of the screens come with them. But a verified report of a magnet getting loose means you should think about keeping it in place with wire tie or some physical means.
On a rebuild, I put in a round magnet to catch the 'new' metal that comes off of new parts when you first run a rebuild. I did 'wire' this one because I thought about loose things as this magnet was a round one that I added to a new screen that did not come with a magnet.
This magnet caught a bunch because the an issue, both related to triple gear face tolerance and mistake in the builder of magnet gap to coil ring, and there was rubbing that caused metal to get ground off a couple of magnet clamps. Had to pull the engine to fix that.
So in a case of a new engine a magnet in the screen is a helper.
But am now cautious of any 'loose' thing in that screen tray, even if you think it will stay put because it is a magnet....think again!