Just wondering how everyone is using their cartos... I've got mine in rotation right now; I use a separate one for each flavor and I rotate what I vape daily. Because of that, I really don't know how long they are lasting me. I'm guessing that it's somewhere in the realm of 10 - 15 refills before the draw gets a little stiff and the TH/VP falls way off. The ones that I've tried to clean (flushing them with hot water + reverse taryn spin to get excess water out) still seem to have a really stiff draw but the TH/VP is improved. I dissected one that died on me to see what it looked like inside and I found some build-up within the polyfill -- but it wasn't burnt up at all, so that's a plus-- and I'm suspecting that's what caused the capacity drop and stiff draw. Since I don't clean them out nightly before they are stored (caps on both ends), I'm wondering if storing them with the juice remnants is causing this build up to occur. Any insight?