Dry down varies by paper and is more obvious in the highlights. If you are new to printing and have the "perfect" wet print then make another with around 7% less time. e.g. 20 seconds less 1.4 seconds, make it 18.5 or even 18 rounding down to a whole second. More experienced printers take this into account in their assessments as they go. Also many ease off on the contrast a little knowing a final tone in selenium will beef up the blacks. Of the easily obtainable papers around at the moment I find Ilford WT has a wonderful sheen when dry and doesn't disappoint.