Open the template where that discrepancy occurs.
In the template designer, click on the Title field, and then on the left, open the “Feed Effect” toolbar. Uncheck Display All. If the # of lines field starts with 2 instead of 1, click in that field and change the “From” to 1. Make sure the “To” field is set to the same number as the other RSS fields that you are going to display.
Save the template changes.