Yep, if there's a really tight pull or it tastes like dirty socks (I never tasted dirty socks, but this is what I imagine it would taste like), I toss 'em and prime a new one. I love cartos.
Never thought I'd speak those words during my first month or so of vaping.
Baditude, you seem to be the premier guru on carto tanks. When did it appear on the vaping scene, and who came up with the original idea?