The EMDCCs hold over 3 ml of juice and the first trick is to fill them correctly. I use a syringe with 3 ml of juice in it for a brand new EMDCC. Put the juice in SLOW. I slide the syringe down the side and fill from the bottom up repeatedly all the way around the carto. The reason you want to go SLOW is to let the juice be evenly distributed throughout the carto. Use the entire 3 ml in your syringe, and the EMDCC is ready to use. When it starts losing flavor, it's time to top it off with some more juice. If juice comes out of the bottom from the center hole, you have overfilled your carto. If so, just blow it out some from the mouthpiece end - clean the battery end with a tissue or paper towel - tap the bottom on a paper towel to settle the juice and see if any more comes out the bottom - repeat if necessary. The EMDCC is a great carto, and that's why many folks use it - even with their high dollar mods. I want to end any confusion about what an EMDCC is. That stands for Ego Mega Dual Coil Cartomizer and here's a picture of one with a description:
eGo Mega Dual Coil Cartomizer, Flat Tip
If condensation in the mouthpiece bothers you, blow out any into a tissue or paper towel each time you fill with juice. You can also take your finger off of the firing button a second or so before you finish your draw and greatly reduce condensation. Most of the condensation is unfinished draws that have to go somewhere.
eGo Mega Dual Coil Cartomizer, Flat Tip
If condensation in the mouthpiece bothers you, blow out any into a tissue or paper towel each time you fill with juice. You can also take your finger off of the firing button a second or so before you finish your draw and greatly reduce condensation. Most of the condensation is unfinished draws that have to go somewhere.