Probably basic solutions you've already tried but just in case, make 10000% sure no other peripheral is bound to the pitch/roll axis. I know a lot of them default to that and it's usually fine to leave it but just in an abundance of caution I'd clear it. Otherwise, when you're saying it's off-centered in the game control display, you mean it's off center where the axis lines cross, or just off centered from the centerpoint, but otherwise on the cross? I have a meeting in 8 minutes but after that if I can I'll hop in and check how my control window looks.