Ok, personally, I don't know anything about that brand. Is it a 501 connection, 808 or proprietary. Can you refill your cartomizers or purchase new ones. If you send a link, I may be able to help more.
With what you said, I can say this. It is very difficult and not worth even trying to change the filler material. Without knowing exactly what you have, cartos can be refilled several times. But it also depends on the
juice you use. The thicker (more vg) the
juice is, the quicker you are going to gum it up. So long as you don't burn it, which is to say, vape it until it is completely dry, you can refill until the atty burns out or the filler gums up so much that it can't wick anymore, most people say at least 5-10 refills.
I use 70%pg/30%vg juice or 90/10 in my cartos and my cartos last at least 1 month or 20-25 refills. I don't bother cleaning them, other than the battery connection. If it gums up, I toss.
Depending on what brand you have, you can purchase blank cartos from $6-$10 for a pack of 5
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