So just vaped about a gram out of my solo, I have never eever vaped before in my life i actually found this site by accident when i was on grass city but was always intrigued by vapes but anways. The solo it self is an awesome unit and i already know its going to be perfect for my portable needs 100% which its made for so i already am happy wioth my purchase but damn I need a pvhes or something for my glass pipe. I thought id have a good set up with the stock stem nd a 14m to 18 adapter but sadly i was wrong and barely have used the solo with my water tool.
I see all the 18mm pvhes are out of stock on pv so is the solo ground gong the same thing? By the way I find the air flow with these stock stems perfectly fine imo, ive been looking around the thread for weeks and the whole milkshake sipping idea is great and produces really nice vapor.
If you have no problem with the airflow, then the PV GonG should be fine. I was under the impression reading your post, however that you had airflow issues until you mentioned otherwise. Your stock stem should work fine with your reducer for vaporbonging. I'm unclear as to whether you tried it or not.
I prefer the PVHES FWIW (we are degrading into a society of acronyms, sadly). I also have the non-HES GonG at was happy with it, but the PVHES is better IMO.