Need a bit of advice on the heater control. The ball and knuckle that controls the valve for the heater flow. This is the connection under the firewall plug inside the hood. The socket popped off the ball joint, and I am scratching my head on how to get it fully engaged again. I can put the joint together, but am not able to get it completely connected. I tried using a screwdriver and hammer from the top to try to push it together, but had no luck. Any ideas?