Quick question: I just picked up my first AIO (Coolermaster Masterliquid 240) and it started gurgling about 3 days after install. I know if it does this for a few minutes at a time, it's just getting air bubbles out of the system, but it seems to be happening fairly often, usually a few times a day. Is this normal for a 1 week old AIO or should I look to replace it?