Use water (plenty) and a light grey (800 grit) pad.
Forget a 320 (maroon) pad. UI is far too coarse. Why in heavens are you wanting to make to rougher? I sincerely doubt if you have enough oil as it is.
Spooky! in so far as it seems to want rougher surfaces, when the ball is probably burning up inide very early. Thes balls are super lane readers and need TONS of oil!
you want, in mu opinion, 1200- 2000, at a minimum, opt 320 grit!!!!!
These are VERY strong early grabbing balls!
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"None are so blind as those who will not see."