There is a bolt that acts like a set screw near the pivot point on the frame bracket. You also might need to make sure the shifter cable is adjusted correctly.

I'd loosen the bolt in the linkage, loosen the bolt on the trans shifter bracket, make sure the shifter is all the way in park, make sure the shifter at the trans is in park, tighten the trans shifter bolt, make sure the steering column is rotated all the way to the left, then tighten the linkage bolt. That should line everything up.