[smoke218]

Get the club 'up' plane. You are likely coming far inside.

A couple drills to check:

get up against a wall (backside to wall) and make some slow motion backswings with a wedge. Get those hands 'under' the shaft (as a swinger).

take a driver\dowel and grip it down near the clubhead end. See where the grip end is pointing at halfway back - is it pointing at your plane line?

Thanks EdZ--I will try out this drill while standing in front of a mirror.