I just received a new setup: a provari, and a 3ml j tank with a lr 2.0 boge carto. I'm vaping at 4.7v. The carto came prepunched with two holes. Ive noticed recently that the flavor/throat hit was not as good and the top of the carto was pretty dry. I placed 7 drops of menthol liquid (80%pg) and it was hitting good again. I've been an atty dripper for the most part and using a bottom feed mod, so I'm a noob to this. Anyways before I go carving up this carto I'd figure id get any suggestions. The draw isn't tight and the vape is ok just not great without me topping it up often. The tank itself hasn't leaked and is working flawlessly. I saw on the forum where someone punched a third hole at the top of the carto to help airflow. I'm also wondering if slotting would work better but I'm a little put off by the metal shavings. Any suggestions? Thanks in advance!