I just bought a new Sony KP-57WS520. I put in Avia and as to be expected, the convergence is pretty bad. Now, this Sony model has a function in the User settings where you can tweak blue/red. However, it doesn't save it! Is this normal? I tweaked it last night --- checked it today and everything reverted back to the way it was. Also, using the Flash Focus "resets" it to this way, as well. It seems the convegence in the User settings is useless. Or, is there something wrong here? I am guessing I will just have to do it the old-fashioned way and go into the service menu so I can tweak all three colors.