RE: halo .030 serving
Don't order it--I have a bunch, and I seldom use it. I ordered a couple of pounds of the stuff some time ago for a bowyer customer who isn't a customer anymore (don't ask me why--I got no warning or explanation).
Anyhow, I can send you some, no charge--send me your mailing addy (you too Burnie).
I can't tell the difference in my release vs. 62XS. Halo is slick, but that can be a detriment--it's more likely to slip. Big serving on a small string is even more apt to slip.
Chad