Every Savage I have ever seen or held NEVER has a fully floated tang from the factory. It's always close on the left side of the tang (from the buttstock).
IMHO, I believe this is a myth. Every one of my Savage's all have this condition and it doesn't affect the accuracy in any way!
Again, I say IMHO, not saying it is a fact. I just don't believe it's any reason to drive yourself crazy. IF you gain any accuracy from floating the tang, it will be minimal. So minimal, it won't make a noticeable difference.