I am thinking of trying this but had a few questions (skip to end if you don't care about my process). I only vape through a Mobius stereo matrix so my resin buildup is not too bad. About every 3 days I let it soak in just iso for a bit and use some pipe brushes to break off the honey that accumulates at the joint. I reuse my iso for a few weeks until it starts to not look clear. At the very end I usually flush with some water or sometimes just let the iso evaporate with some strong airflow. I then turn on a shop vac and let it pull air through the Mobius for about 2 or 3 minutes. This has worked well for me and gets my glass very clean but it does leave a film on the inside that I can't quite wipe. It is like spraying windex on glass but not wiping it off. Once I fill it with some water it looks crystal clear but how can I make my glass look sparkling new as if I used windex and a cloth to wipe down the inside? Does PBW leave any kind of film on the inside like iso does for me? Is it recommended to dry it through a shop vac or does letting it air dry work and still leave it sparkling? On a side note I just bought some rez block and waiting for it to be delivered. I am hoping I can go down to once every 5 or 6 days for cleaning.