I bought some juices I love as well as blank cartos, I plan to use fresh ones when they go bad. But I did buy some flavors of prefilled cartos that I don't particularly love, so I decided to try washing them out to reuse with a flavor I like rather than let them go to waste.
Anyhow, I tried washing a couple to see what would happen. Boiled them, let them soak a while, rinsed them out, shook them out to get as much water out as possible. I noticed a day later that they weren't drying out on their own. So I found online that some people throw them in the oven on low for a while and it dries. I tried it, and it worked. I cooled them, filled them....and I find I can't get any vapor and the draw is really hard. My question is, is there something I have done wrong? Or do they typically not work as well after washing?