Windshield wiper rebuild

Has anyone ever rebuilt ther wipers on a early A body?
The reason I ask is that my wipers on my 62 Wagon havea the following issues.
1: Both springs are broken ( anyone know where to get replacement springs )
2: The driver side wiper when I accelerate up to about 45 MPH it will move up the windshield where the arm and head are riveted together is very loose? Anyone ever had this issue and what did you do to fix it?