F5 making bad request to backend server and resetting connection

The F5 is terminating SSL on the frontend VIP and is making the request to the HTTP backend but the server is sending HTTP 400 and then F5 is resetting the connection, currently the backend server is live and working perfectly through another Loadbalancer. There is an unconfirmed possibility that the backend server is doing a redirect to HTTPS from HTTP but I have yet to confirm this. Any help from anybody would be greatly appreciated.