I have an issue with the controls. When the firestorm update was released my vehicle controls were messed up. I'm using custom control settings and the addition of the helicopter settings obviously messed them up.
I fixed them for vehicles so for example in a tank I can use the right stick to go forward and backwards. This worked in the base game again as I played BT and CQ with tanks. However in firestorm I used a Staghound yesterday and it again required me to push R2 to go forward. So it looks like the custom vehicle settings don't work in Firestorm. The settings for the helicopter do work though.