If you're having problems with juice clogging up your air holes use some stranded wire to clean them out. I strip about 1/2" from some 18 gauge wire and then pull 3 strands to the side and twist them up. The goal is to get a pik that is stiff enough to go through the hole but not so stiff that it won't bend really easy when it hits a part of the inner workings like the coil. Then I just stick the pik in the air hole until I meet a little resistance, swirl it around a bit and voila! Unclogged air hole. Remove, straighten and repeat with the opposite hole. Unlike using a fine needle, the wire is so pliable that it reduces the chance of damaging the coil while still doing the job.