Hi Guys so I have been using the Zeus for a long time now im on my 4th batty I have used gosh a bunch of carts I only use them for a week and toss them as they begin to clog on me. I just got my 5 pack for the month and yesterday i went through three in one day They clogged almost instantly I used my needle to try and open them but would kill the cart, yeah im not very good at it. One cart just plain wouldn't fire at all filled it with 90 drops and nothing I adjusted the contact and still nothing im on number 4 today and its pretty much the same thing clogs easily. Im not sure whats the difference same juice same batty s terrible results any ideas? I guess i need to learn how does everyone clean there center hole with out damaging the electrode?