Try old drill for consistent rolls

Sometimes your stroke can get out of whack, and you start mis-hitting the ball.

Create a gate with two tees just wider than your putterhead and hit putts without the club touching either tee.

If you loop the putterhead to the outside during the stroke, you’ll bump the outside tee. If you swing it to the inside, you’ll bump the inside tee.

Go through clean, and you’re hitting the ball in the center of the face. Just like any other shot in golf, if you catch it in the center, with the face square, you’re going to get a good result. That’s what you see the best putters do.