[brianid]

Not sure you're talking about the same move: when you say "elbow turn" I see (and it looks like MizunoJoe too) a movement of the entire arm from the shoulder. That could intefere with the pressure on #4. #3 release is pronation/supination, a movement of the forearm ("wrist movement" in TGM terms).

Yeah, the L elbow turn is a CCW movement of the whole upper arm from shoulder to elbow.

But actually, it helps add pressure to #4. When I turn my L elbow (whole upper arm bone actually), my L triceps "presses" into the side of my chest/torso/armpit. So it doesn't interfere with #4, in fact it helps a lot. I actually don't feel PP#4 much when I don't turn the L elbow.

Re #3 release as supination..movement of the forearm/wrist movement...moving the upper arm actually will move the elbow, which in turn moves the forearm, which in turn the wrist...it is just like painting but you are holding the paintbrush at the opposite end...turning the forearm or wrist itself is like holding the paintbrush near the brush...

So, let's ask a painter which one is better?...