If you think the powers that be can't stay out of your fuel containers, wait till you need to replace a common two valve shower set. I wasted an hour Friday and much of the day today trying to find a quality replacement for a failed set. Yes, I can find some junk at the big box stores but nothing remotely like the American Standard I had. After visiting plumbing supply houses, surfing the cloud and calling around I finally ordered one from Chicago. The issue is that codes now dictate that the set has temperature control to keep idiots from scalding themselves, that pretty much dictates single handle control. Yeah, I want to destroy my wall to accommodate the new-fangled junk, then waste twice as much water till it gets warm.