since a tiny bit of water was coming through my keurig. I ran a full 50/50 mixture of vinegar and water solution through a modified keurig pod. it took a really long time - longer than normal. Next I dumped a tablespoon of baking soda in the modded pod with another hot vinegar solution, which caused the baking soda to foam and clean nicely. That pod brewed very fast and i thought I got the clog out. Turns out only a portion of the clog came out because the brew slowed down again. I think this all started from using an expired pod? Hmm. Next I opened the keurig with the help of this screwdriver kit. Found a gross portion of molded grounds in a small clear hose. I removed it and blew air through it and watch the greenish-brown slug come out the other end. after reassemble, so i ran the hot vinegar, water, and baking soda solution through again. Followed that with a fresh 50/50 vinegar and water solution through, which was fast and clear - going to to plain water. installed a legit non expired keurig pod and now i have coffee!