Phil, first off you need to disclose that you did not do the mod required under the recall, which has made the thing a whole lot more finicky than it already was.
Second, I agree with BB. "With some work" is uncalled for at ANY price point. You replaced faucets, shower heads etc. Now you're complaining about people complaining that they don't follow your advice and run to Home Depot to get hundreds of dollars worth of hardware to replace the stuff they just paid for. Furthermore most people don't even know where to start to install that, or where to find someone to install it for them at great cost. All this on their brand new quarter of a million $$ (give or take) unit. Think about that. In my opinion it is NOT OK, not even by a long shot.
Your point is correct in that there are teething problems in the on demand systems. And yes at this price point the Aqua Hot is not an option so FR tried to do the "almost as good" trick with the propane OD heaters. Except they didn't work well, at all, until we got to the Trumin which they are now installing.
The right thing for FR to have done would be to say "We are not sending these out until we get it to work RIGHT." They should have sent them out with tanks, hey make it a 20G for that Hollywood shower, until the Trumin came along. And they know it, they told me so off the record. They took a shortcut to try and keep up with the Jones's and it backfired.
This is beyond "tweaking" but yes, I will fix it, even though I shouldn't have to. Stay tuned.
To the mods..... We LOVE our unit, I am not badmouthing the thing. I agree with Phil that for the money it is a LOT of bang for the buck. I would buy it again, and I will recommend it to friends. (I'll just tell them to make sure it has a Trumin, or negotiate it as part of the deal). This specific issue FR boogered up though, and I don't feel they are doing the right thing by sending me home with a "It is what it is....." They should make it right, it should not have to cost me money and time.
And sorry for the rant.... Phil started it.