I have noticed that My dirver is not getting the distance as my irons are. I see that my right forearm (right-handed hitter) is what I would call flat on the down swing and pointing past the target/ball line. Any drills to alow me to start back on the plane line when starting down. It seems that as I start my hips it causes me to over roate the shoulders, causing me to come over the top and then the right forearm is pointing past the target line.