It is notoriously hard to straighten a bent steering column. Typically, they bend just above the crown race. Any bend results in misalignment of the top and bottom headset races causing abnomal wear and making proper adjustment difficult. The best solution is to have a framebuilder replace the steering column or install a replacement fork.

There should be a serial number, in two parts, on both sides of the seat lug. This will allow us to determine the year of your Campione del Mondo, though I believe it to be circa 1982.