Ive never used a Phoenix, but I just got a couple super-t drip tips, and they are amazingly well made, like a fine medical instrument or handgun. They are heavy and are a "tight" fit. I have to sort of work them into my cartos and my VIVi Nova. I have to be careful on some of my
tanks as when I try to remove it it sort of starts to take the carto with it and I dont want to have my
juice spill all over. I would contact super-T and ask them about possible return in case it just doesnt fit.
I really love these tips and they will probably out last any other item I own. Makes me want one of their Precise
mod even more.