Purchased a Utillian 421. After just over a month of regular use I went to clean it. When I tried to pull the stem out of the mouthpiece the adhesive holding the glass to the metal let go. TVapes CS is super slow, and by the sounds of it theyre pointing at the part of their no hassle warranty that excludes glass to deny my claim, and merely gave me a link to replace the $10 part. I will definely take my buisness elsewhere to replace it, and for any future purchases.