You mentioning tightening until it twangs: here's a post from Practical Machinist that includes a link to a calculator for tightening the blade, along with MIDI files of what the blade should sound like when you twang it. I was surprised to learn that blades are tightened 15,000 to 30,000 pounds.
http://www.practicalmachinist.com/vb...htness-211224/

How cool would it be if Hooda could get the use of his saw back, just by replacing a spring!