Here's the deal with persistence I found out what causing your cards to flaw. It took me 2 weekends to get it to work I got 2 adept summoner with persistence this past weekend so it does work. You gotta keep the flawless in tact(because this counts as going flawless, you just don't go to the lighthouse). When your using persistence stay in the game until the end, let it go to the commodations screen before you leave. If you leave early(even though the match is over) it will flaw your card. You can try to time it right but even though you don't get a warning for leaving early if you leave before the 5 second timer is up at the end of the match you will have to reset your card. I just waited the whole time each loss or win and had no problems with it.