does the shifter actually put the trans in all the gears?
if so, the shifter itself is adjusted properly.
is it the indicator up in the dash you are talkign about?
if so- with the engine OFF- take off the beauty cover under the column, and put the shifter all the way down to L1. you will see a small phillips heads screw on the side of the column that is in the middle of a clip with a small black cable going up into the dash.
that controls the indicator.
all you need to do is loosen the screw, and move the clip until the indicator shows that it's in 1. you might need to fine tune it a bit after putting it back into park.