Very rarely do you come across a frok with one leg bent 'straighter' than the other which implies each blade has a different curvature. In most instances one of the legs is bent within a few inches on the crown or the crown itself is bent as mentioned by ftwelder.
Follow TMar's advice and check everything else first. Is a blade forward or is the othe back? This can be trcky to acertain with out know the forks original rake.
I rigged a simple jig on my kitchen table using quarters. I rested each side of the crown on 4 or 5 of them and then added spacers under the steerer tube to level the steerer. From there I measured the distance of each end to the table. If you draw a straight line on a piece of paper and align the steere with this line you can tell if one or both legs is mis0aligned lateraly.