Help !! Running super rich.

So just as I was thinking. Bumping up the timing is going to up the idle. The idle screw is backed all the way out. It’s still to high. Even with the throttle disconnected. Idle is high. And there is no more adjustment for me on the idle screw.
lol. . Thank you guys so far. Even after bumping up the timing the idle mixture screws basically had no affect