US Postal Service Sales/Distribution PSE interview questions

Submitted application on 2/23/17 & immediately received request to complete online assessment. As soon as the assessment was completed, I was asked to take the 473 proctored exam. I took the exam on 2/28/17 and scored an 84. It's not the greatest score, so I am concerned that I won't be offered employment. On 2/28/17 after the exam, my status online stated "Pre Hire List" & then one day later, 3/1/17 it then said "Pre Screening" - not sure what either mean and if the difference in status is a positive step forward. I hope I hear something soon on next steps in the process.