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You should be able to PC again. I've PC'd a card more than once. I do believe CapOne requires at least 6 months between changes. Sometimes it may take a little longer depending on how their feeling that day of the week but I can't recall a PC being avaialble in a shorter period of time than 6 months from the previous. Congrats on getting the no AF version of the QS.
You can check online if they have any upgrade offer for you without having to call them or chat with them. Here is a thread that talks about the process and data points.
http://ficoforums.myfico.com/t5/Credit-Cards/Capital-One-check-for-upgrade-link/m-p/4934733
I product-changed two cards to Quickslivers last August. Then I PC'ed one of them to a Savor a couple of weeks ago. Six months and two weeks would have elapsed between those PCs.
Note that we haven't yet seen Savor PC's via the link. They've been available via either phone call or chat.