Seems like a pretty good deal. Kinda funny that I'm now considering these big ones after kvetching for a couple of years about when the small ones were going to be available in the US.
No there's no coming back. If it is oxidized it will only get worse. And you picked the style that is probably the most susceptible to oxidation of all. The first thing to go is hop aroma and flavor, and then it's downhill from there. There's plenty of good stuff on here about...
Search for "four-way side outlet tee" in the diameter and material you want. I found some 3/4" ones on Amazon right away, but they are not black and come in four- or ten-packs.
That should be fine
and so should that.
I'm not sure exactly what you mean by "prevent the beer from carbonating." As I said, I think your beer is carbonated just fine and the foam is CO2 coming out of the beer. If you switch to the correct beer line diameter and length the CO2 will stay in...
A great way to become more patient is to build up a pipeline. If you do a really good job of that, you'll have more filled kegs than you can fit in your kegerator and will start searching the threads for the best way to store uncarabonated beer. ;)
Beer line should be 3/16" or smaller, with the appropriate length to balance carbonation as indicated by @Yooper. Or use an online calculator. At 15 PSI you would need 145 feet of 5/16" beer line to balance the system. I'm going to go way out on a limb and guess that you have a bit less than...
So you don't see the sensory method as limiting in any way? (serious question; not rhetorical)
I think you're missing his point - he said orders of magnitude, plural, and I'm pretty sure he meant several. Not because one order of magnitude wouldn't be a massive improvement and an undeniably...
Yes, I'm aware. And I could probably tell a Scot from an Irishman if I heard each speak a couple of sentences, but not if all I had to go on was "whisk(e)y."