Something that I noticed a couple of months ago, the Bank tackle and original Solar Buffer beads I was using to protect the knot with a run ring are absolutely perfect for sliding the run ring on to to make a semi-fixed bolt rig. A quick shake and the run ring becomes free running again.
Have tried a bit of yellow foam?
you can cut it to suit and balance it with putty/shot on the hair.
I soak zig foam, give it a squeeze in the glug and it will absorb it. Soak for as little or as long as you like.