Now that the placement is set for the parcel line labels, you can adjust the label-fitting strategy. In this example, stacking is turned off, the labels are allowed to extend slightly beyond short parcel line features, and the label engine will reduce the font size where that will allow it to place more labels.

The parcel line labels will now be able to extend slightly beyond the shorter line features and may be reduced to as small as 5 points from their base font size of 7 points. This will allow a greater number of larger labels to be placed where there is more space available and smaller labels where there is less.