Thanks Bray - I am right-handed ... so the Horizontal closes the clubface and tends to go a bit right ... but I think I know what you mean re. plane line ... the plane line you are referring to is in fact what I consider as the ball to target line - right?
I always considered the plane line as the line of the club going back and up - like Hogan's pane of glass image.
And I appreciate your point that I probably need to get Angled a little closer to Horizontal. Thanks again.