Controller for vehicles and Mouse and KB for Infantry.

Hi

I am a PC user.

I have always used the arrow keys and not WASD for first person shooters and vehicle controls and that is in previous Battlefield games. However Drones don't have a dedicated settings section in the controls section and they use the standard infantry keys including WASD. You can't remap them to arrow keys etc. So when i try and use the arrow keys it makes the drone look up and down etc. I have a controller and this works perfectly for all vehicles including drones. However i don't like it for my infantry as i find it is not precise. I have tried to keep the controller on for vehicles and keyboard and mouse for infantry, but when i press my steady scope control on the keyboard it fires the gun etc. So there is some sort of clash with the controller if kept on and the keyboard if using it for infantry. Is there some way to make sure all vehicles are controller and infantry mouse and keyboard without them clashing when i use the mouse and keyboard for infantry. 

Thanks