ORIGINAL: manks7477
You have a couple of choices. If you have a computer radio with open channels you could set it up so that two channels are mixed and set the Ele to that.
If you have to go with the Y harness you can fix your current problem by turning one of the servos around, or moving the throw rod to the other side of the servo arm
Turn the servo around?????? That doesn't change the direction of rotation.
Moving to the other side might be a valid option if there is room.
Question is: Why are they turning in different directions in the first place if they are the same servo types on a simple Y-harness??