Clay is definitly more experienced than I, but my observations have shown me that a truly magnificent pt/pd print has to have a perfect exposure to show that 3 d effect. Too light and it looks washed out, too dark and it looks dull and lifeless. The funny things is that the "bad" exposures still look ok, the error is not as apparent as it would be on a silver print. Perhaps this is the reason some people feel pt/pd prints are dull and lifeless, because of printing errors.
Suck it up and make a new print, if you get the perfect exposure you will be rewarded with a print unequaled on any other medium.