Not worth the effort. And I can only imagine that it might be worse. But, I may just take a look at the returns and do a quick math problem and see how it turns out. I'm afraid the interest and penalties would be too great on the years I would have owed money. Would the IRS tack on interest and penalties from the time the tax return was due or from when I re-filed? Not a question I expect an answer to, just something I'd have to find out.
And we know, once I pay 2007 taxes and if I re-file, it would probably be years before I got a "refund". And my tax guy is swamped. Glad I got my information to him early and before he got swamped.