Steering Wheels - Joysticks - Headsets - Gamepads

[DjTransient]

Ok, here's my problem.

Everything works great except for one thing. In the game to need to hold the right mouse button to go into "aim" mode which raises your weapon. Then, while holding that you click the left mouse button to fire.

I have assigned right mouse buton to a left shoulder button and the left mouse button to a right shoulder button so I should be able to hold the one, go into aim mode, then press the other to fire. Problem is as soon as I press the right one to fire, is cancels out of the aim mode and does a melee attack.

Can this controller not handle two buttons being pressed at one?

Any help is much appreciated. Thanks!