[Daryl]

Here's a necessary drill:
........... Simply complete the motion: Throw the ball at AND THROUGH the ball on the ground. Just throw the ball in your right forefinger 'question mark' DIRECTLY at the ball between your feet. Make sure you continue this Straight Line Motion UNTIL YOUR RIGHT ARM IS STRAIGHT.

Oh,,,,That should be bottled and labeled. If I may be so bold to add: Bent Right Wrist without Rotational or Perpendicular motion: CF will pull the ball out of the "Question Mark". (On-Plane Roll)

It is toward this end in the Golf Stroke that your THRUST must be directed (both arms straight, left and right). Despite the incidental 'up and in' of the Clubhead orbit after Low Point (opposite the Left Shoulder), there is NO UPSTROKE until the Right Forearm Drive (toward the Base Line of the Plane) has been accomplished.

There will be a Downward force only while the Right Arm is straightening. Don't run out of Right Arm.
That should be in the Book: "Magic of the Triangle"