Sorry to revive this thread but I'm building a realistic A-10C cockpit too and I'm interested in the pedals topic.
I can see from this photo that the pedals are pendular but they're not hinged in the middle! Instead, they have separate mechanisms and that makes me wonder if this allows dual input for the rudder movement giving asymmetrical rudder movement as the A-10C has two rudders...
Warhog, your pedals rock and I'd like to know how you improved them or if you finally gave up and bought the Slaw Vipers