I’m definitely doing something wrong

So, I need to know how to treat my cart/battery because I’m doing something wrong. I get about halfway through a cart and it will start to gum up. At first I thought it was because I would lay down my cart when I wasn’t using it. And then I tried keeping it vertical the whole time, and it still gummed up. Now I was thinking it might be because I’m hitting it too frequently. That was going good for a while, but my cart has gummed up again.

Gummed up= Product coming out of the top and it clogs so I can’t take a hit. Any help would be appreciated