ok I have been working some more on this - I think I have been experimenting with a more pronated position. Well I can’t tell - it feels pronated, but is it? I keep trying to feel the ramp, but I don’t really know what it feels like to ramp down to the guitar body. Anyway this way of playing (@Troy said try the Molly Tuttle 10-0-3 style, so I think I am trying that) feels much smoother for me - my hand feels like it’s just swiping, but I’m getting it cleaner and faster than when I was trying a supinated Andy Wood style. Although I still may be doing that - would anybody be able to give me some feedback?
Actually one thing I find is helping is what’s happening when I go back to the beginning of the roll (i.e playing the b-string, then going back to the d-string. Instead of thinking about it as a string skip, I just try and swipe back in a straight line as quickly as I can, and It feels like it cuts out unnecessary rotation or potential string hopping - I think.
Anyway let me know if I’m on the right track here - feels like I am. When I was learning this tune 6 months ago I would have tickled you with a feather duster if you said I could play 2 bars of it at 135bpm…