Would be nice to know what kind of manual clutch you have assigned, the simpler way would be to upgrade the pedals to T3PA or T3PA Pro (or any with appropriate Leo Bodnar).
Try the latest wheel firmware and drivers (the updater in the driver should check for firmware). AFAIK the Bodnar USB has a driver (you're on your own there as again, I don't know what equipment you have). You should be able to disconnect the existing pedalset as it is RJ12 into the base.
You should see both controllers listed in the control schemes with a tick next to each active controller. So there should be minimal remapping required.