Hey x, do yourself a favor, and lose the cart's. They never did much for me, other than not work, and waste juice. Just drip for a while. Carts work the first couple of times, then seem to just quit wicking. Even if it's making contact with the bridge, it won't perform like you want it to. They mess with taste as well imo.
If you want a way to vape other than dripping, or a bottom feeder, the best alternative I've found are bloog planets 808's. What device are you using? You can get an 901 to 808 adaptor at good prophets for around a dollar.