cybrguy
Putin is a War Criminal
The 2 RBT short stems I use most as an adapter for use with water have slightly different ODs. A clear one came with my custom z and a smoky one came with my Chinese Z (V2 I think). The smoked one is noticeably tighter and harder to get the stem loaded, but it works just fine. There is always some variability in the OD (and ID) of glass, or at least that has been my experience. You may recall that when we found out about Mountain Glass, the biggest consistency with them was that there was a complete lack of consistency...