More Thoughts
If you recently replaced your tires and/or wheels and you noticed this problem with your front tires shortly thereafter, then Rick, as usual, is probably right. However, if you haven't recently changed your wheels or tires, there may be something else. Did you check your car's height at the front after you replaced your springs? Is it possible that the new springs are a little bit shorter than your old ones were? If so, Rick has given you a solution that is a lot easier than changing out springs again.
And did you replace the rubber isolator between each spring and A-arm? If so, were the new ones the same height as the old ones? Sometimes those get old and can fail, too.
I would have thought that the new springs had not sagged (yet) like the old ones and your ride height might be a tad bit higher, not lower, than when you were on 50 year-old springs.
Good luck fixing your issue.