I had another awesome epiphany a few days ago!
During a previous lesson, Adam had mentioned that the arm movement is initiated from the back. Anyway, I think I figured out what he meant!
So during my practice session I lightly activated my lats (on both sides) and it totally changed my body position/posture and also created a deeper, louder sound. I think if the lats are activated than the 'arm unit' can only stretch so much before its pulled back to the body which creates more weight!! Ha!!!
Although I have to watch out for the muscle affecting my hand and the rest of my body. Typically, if one part of the body is more tense than another, the other muscles will follow suit. So, just like in Lindy Hop I have to think about nice relaxed hand and activated back!! Being able to isolate different muscles comes with practice. :)
Actually, I'm not sure if this is correct, but I'll find out during my next lesson. It feels right though...
I was really excited about going straight to the new repertoire, but thought I would play even better if I warmed up and did my usual routine; and boy, was I right! Sooooo EXCITED!!!