Report "Keurig 700 coffee brewer will not brew (bought in early Dec. 2013). I just get drips of water and it keeps dripping for a lengthy time. Could it be clogged with excess grounds in the k-cup I use to make de-caf? I have checked the water tank and it is full and I checked connection etc. I have not de-scaled or run just water through it to clean the coffeemaker. Do I need to do that now before anything else or even try to unclog any unused grounds??"