As long as we're throwing in observations about air bleed...................

Keep in mind that the adjusting isn't linear. When the screw has moved about 1/4 into the hole until the hole is about 3/4 closed, each turn closes a LOT of hole compared to how much is closed when the nose of the screw is at either end of hole.

If you plan to adjust an airbleed, it's usually a good idea to look into the hole before you start. Get an idea where the nose of that screw is in the hole before you start. You'll be glad you know where it started if you want to start over. And you'll have an idea how sensitive, or insensitive each 1/8 turn of the screw is going to be.

You also might discover with that look why the idle is doing what it's doing. Grass. Solidified oil. Previous fiddling closed it already. The screw is not in the hole at all. Lots of things.....