Hi Tate,
Yes, it is very difficult to follow up via the internet on what we talked about in person. Yes, arm movement as Rufus Reid talks about is also a part of producing sound. What I was working on with you was to stop the wrist bouncing which can waste energy that could go into the hand/fingers. For a great example, go to
www.youtube.com and type in the search Mingus Mingus Mingus (yes three times). It has a great shots of Mingus' right hand walking and soloing mostly with the meat of the first finger. Yes, his wrist bounces A LITTLE sometimes, but not like you were doing.