Has anyone tried this carto cleaning kit? It's less than $8 on smoktek, I already ordered one since it's super cheap and the syringe will come in handy anyway, just curious if anyone has any experience with it. Just starting out with cartotanks and it seems like it'll be pretty handy if it does what it claims, but I've never tried to clean or reuse a carto before, so far have just replaced when it starts to taste funky.