Kirk,
I notice your
slide playing is very clean and you have the slide on the pinkie.
My slide teacher advised me to use the ring finger for better control of the slide. Duanne Alman Used the ring-finger as you can see in the picture below.
It seems a lot of the pinkie-slide players get clanging and banging noises when they move quickly, and some of them are extremely good players with professional recordings.
You have managed to overcome that issue from what I can hear.
I notice Bonnie Raitt uses a slide on her middle finger. To each their own I suppose.
