Have you thought about just adding some boge cartomizers to your ego basic. I initially had luck with the tanks, but then they started leaking. The cartomizers were what helped me the most. They are disposable, but you can rinse them and try different flavors if you want to be even more economical that 5 for $7.00. If I want to change flavors, or the draw gets hard, I rinse them with hot water, and then bring some water to a boil in the microwave, then let the cartomizers sit in the hot water for about 15 minutes, then blow them out, let them dry overnight and start over. Most of my cartomizers last about 4 weeks.