[Q] OTA 4.4 back to 4.3 topic

Can someone help me take my S4 back to 4.3? I got the OTA update for 4.4 yesterday morning and have had nothing but problems. Terrible battery life (40% down in 3 hours with little to no use) WiFi wont turn on thanks to this piece of **** Knox software. So before I dump Samsung completely for a Moto X or Nexus, can someone help me downgrade from 4.4 back to 4.3 where I had no problems?