Well I had seen many posts about cleaning your EVOD coil so I thought I would give it a go, once I had everything disassembled I noticed that my flavor wick looked really bad, then I remembered reading a post about cotton wicks on ECF, so I took a cotton ball and made my own flavor wick, the first one was to thick and the juice wasn't flowing well and it had a burnt taste after a few hits in a row, but the next one was just right. I think that the flavor is better then when it was a silica flavor wick.