slap,
Activator coverstocks can't react well to very fine sandings PLUS gloss polishes.
Either use 400 to 800 grit PLUS the high gloss polish
OR use 200 - 400 grit sanding PLUS ROugh Buff.
ONLY, I REPEAT, Emphatically, ONLY do both when you face EXTREMELY dry conditions. Then, why both using the expensive Activator coverstock?
--------------------
"None are so blind as those who will not see."