Well, to tell you the truth, you most likely won't notice the difference, but then you'll always have a negative impression on the xovers because of the placebo effect.
In my cases, I'm extremely picky about part values for hifi equipment. If I could have my way, that inductor would be on the dot! But that's just cause I'm picky about what goes into my system. Anyway, try the inductor in there as it is and see if you're satisfied with the sound. If not, try undoing the wire until it sounds right. With most inductors, you can remove windings while the audio is passing through and you can hear your adjustments in real time. Just make sure not to go past undoing two windings or you'll get mess going in no time.
I had to do the same to my Solens. I counted the turns across the outer width and the layers from the inner to outer diameter. Multiply the two and you have a fair approximation of the total number of turns. Then roll off 4% of the total. If your nervous, just take 3% off.