I am having center drains from the right saucer on Grand Prix and from the saucer on Sharpshooter. The left saucer on Grand Prix consistently ejects the ball to the flipper. There is wear around the lip of the saucer on Grand Prix, but there is no wear on Sharpshooter. Both games are level, but still having the center drain.

Is there a method of tweaking the saucer to guide the ball eject away from the center drain?

I had luck with increasing my incline. Thanks for the good advice.