So, had the TV calibrated professionally to 65k as close as the TV will allow, and we got it pretty good. The low end on this TV is just wonky and no amount of trying could ever get it quite right, but that's ok.. The overall picture including flesh tones, looks great.. I did this because I wasn't believing in the service switch on the TV, it looked awesome at first, but something was off, flesh tones.
Oddly when the gamut was measured, we learned something about both the phosphors and the NTSC decoder.. The green phosphors aren't good on this CRT, and the NTSC decoder just can't get magenta and cyan right. (Cyan is probably due to the odd green phosphors). Blue and red however, are freakin perfect.