[Tai Google]

Old thread but, while we're on it...

I think grinding the surface off and checking for surface flaws is also a good idea.

... just take a sample, normalize it a few times, take it up to a red/orange heat (daylight in the shade), hold it there a few minutes, quench it in some warm oil,? and see what it does. Most of that spring stuff responds fairly well to that. You can always tweak your temps., times and medium a bit to optimize the steel, if needed.