I had an eerily similar experience to Bruce.My first irons were Wilson Staff blades, stiff shafts and if they were bent it was because of forces other than a club fitter! And they were purchased right around that same time period as Bruce's first set though I suspect my Mom paid less than Bruce - $25 for a used set... I still have them and the set included a one iron!
Then last fall, the folks at Titleist included me in an ad shoot for the then new AP 2 irons and I went through an abbreviated, but amazingly thorough and accurate club fitting on the range with Trackman operated, and data interpreted by, one of Titleist's expert fitters.
All I can say is Wow! I swing the club in a rather flat plane (influence of hockey, eh? GO BRUINS!!) and so unsurprisingly, we bent the clubs a bit flatter than standard. But the real revelation for me was shaft technology. Finding the ideal shaft took a bit of time, not a lot of time, but resulted it more distance and a higher ball flight trajectory. Pretty cool...
You will love the process Bruce!