You'll have to wait until Cap One reports the "high limit" ($3,000 in your case). Then, 10% of that would be $300, so you'd have to pay off $2,000.00 Capital One apparently refuses to report the actual credit limit (I've disputed that several times and each credit bureau always reports back that the information is correct). I'm not sure if you can actually put a "notation" on the credit reports for that stating what the actual limit is. It's been my experience, that any automated system (ie, apply for credit online) will never take that into account.
Finally made it to 813