Is there a good exercise to help me get better at going down in a scale. I can go up using hammer on's some what quickly but if I try to go back down I just can seem to get my index finger in the right place to accept the pull off. If I bar the entire fret I can do it fine. I guess im just wondering if there is some tip to do it better that I might not have considered. I hope my explanation is sufficient. Thank you.