I have the flex keg system with the double bodied regulator. Had an issue with one of the kegs holding pressure, and I'm not thrilled with the regulator. Seems pretty unresponsive under 12 psi. The kegs have a fairly large diameter as well, probably around 9.25 inches. Midwest's customer support...
Here's a question:
I've done a couple of partigyle brews where I wanted different styles for the big and small beer. I did a mash of some base and crystal malts, then used steeping grains to make the big beer a stout and left the small as a pale or something similar. I focused on the mash ph...
Did you ever get this figured out? It sounds like the exact same problem I'm having time after time. I am careful in sanitation, but in most of my batches this same solvent smell and gushing shows up. I know it's not the fermentation temp or underpitching. I recently did an imperial stout...