I have been suffering from a past parallel swing for a bit now. My arms break down at the top and I have to rely on my hands making up for it at impact. This works half the time. When it does I'm on, when not..... well not so much. Is there and training aids or drills that will help me groove a shorter swing in?. I work on 3/4 swings on the range and contact/direction goes up drastically. However, for some reason as soon as I get out on course I have a "set distance" I'm trying to hit to so my brain says swing hard you can't get there with a 3/4 swing. I try to take a extra club but when I do that I still make the same swing but decelerate on the way down and it turns out worse. Anyone have any ideas?