I looked and could not find anything about this on ECF, so thought I would ask. I was refilling a "stainless" CE2 the other day and noticed the inner ring was a pale green. Confused about this I started to investigate. I noticed on the inside of the CE2 tube was incomplete plating over what looked to be copper. I could see where the plating ran out toward the top of the tube, so I thought I would verify because I could not believe CE2 Rev4 cartos were actually copper tubes plated with chrome I guess. I started to hit the tubing with a file and sure enough, they are copper! What the hell? Isn't copper supposed to be extremely harmful if inhaled? It was obvious that my juice was reacting with the copper. How the hell are these marketed as stainless? Hasn't anybody else noticed this? Did I miss something?