He is a faculty member and mentor to the PGA's Specialty Certification in Teaching. This week's answers To ask a question on any golf topic for a future Lesson Tee, please click on the link below. I am right-handed. I always think I'm aimed correctly, but this happens a lot especially on downhill putts. Mark, I would first look at your head and upper body if you are pulling putts.
Many golfers move their head and upper body forward in their follow-through.
This will tend to move the putter's face left and close it. Get a wooden dowel, about 4 feet in length. Attach it across your shoulders using rubber bands, placed through your arms up to your shoulders. Set up as if you where going to putt, but place your head up against a wall. Try to think about moving the wooden dowel, in a seesaw fashion.