We all know the solution, which is very simple/basic: just get the shooter tip centered on the ball.

There are only 2 factors controlling this:
- Playfield position
- Shooter position

Is there any way to adjust the playfield position, in respect to the shooter? ->>> probably not or not easy

Therefore - adjust the shooter / shooter housing.
-- The housing is attached to the cabinet with 3 or 4 screws
---- just remove it completely, and see if there is any wiggle room to align the tip with the ball.
---- If there isn't any wiggle room ->> use a drill bit to make some in the direction you need to get the tip aligned properly
----- For clarification: widen the holes in the cabinet that the shooter housing attaches through
---- NOTE: the shooter housing will cover up the slight enlargement to your cabinet holes