I just switched out Axxis Metal Masters and put in HPS's in the 94 twin and the increase in initial bite was very noticeable and they do not dust much at all. Especailly not nearly as much as the metal master ultimates. yuck.
IZCC #8358 1990 Pearl Yellow Z32 TT 1994 Black Emerald Z32 TT 1997 Black Emerald A32