Hi:
My first STAR Universal has the black blued Perfection Sizer Die (Carbide) in the machine head for .38 Special.
The others in the machine head are also perfections, I would assume.
I have had this machine since 1979/80 and those dies work perfectly then and now (pun intended) (purchased from Mo Defina, gunsmith in CT).
I got this first Star from Mo along with my first S&W 52 38 Special wadcutter. Mo sold STARs back then for bullseye shooters back in the day.
Never a problem and still on the same decapping pin after all these years and rounds (lost track of count actually).
Now, I do not know who made these dies and if they are the same source as you mention, RL Shockey?