I just don't get it (another TPG complaint, of course)...

[swarmee]

He may be saying that he would take the conversion of any 9(OC) to an 8. PSA will normally automatically downgrade a single grade drop due to any flaw, but return a Mint card that's heavily off-centered either 9(OC) or PSA 7 or below based on their listed requirements on that page:
PSA 7: 75/25 or better
PSA 6: 80/20 or better
PSA 5: 85/15 or better
PSA 4: 85/15 again
PSA 3: 90/10 or better
PSA 2: 90/10 again
PSA 1.5: 90/10 again
PSA 1: Not miscut

So a Gem Mint otherwise card that's 89/11 can supposedly only get a top non-qualified grade of PSA 3, or it would be a 9(OC). That's why I never select "No qualifiers." Why not take a much higher grade and registry set value? 9(Q) = 7 for the registy.