sloppy, vauge shifter

Ok first….

The stop bolts help clean up the throws (you can adjust out over travel. This is done in 3rd and 4th). Try shorter bolts the ones supplied are often longer than needed.

Your shifter may need a good cleaning (may be a rock or other hunk of road crap in there)

I would put the car in neutral, remove and clean everything, put a pin in the shifter hole and reset everything.

If that doesn't work you may need to rebuild the shifter or get a new one.