PC1 Ferrari 458 wheel deadzone issue

[shonp]

Hey, just got the Ferrari 458 racing wheel, the cheap one, not the TX FFB version.
Tried to play PC1 and its impossible, I have this weird unresponsive deadzone at around 20 degrees for both sides and I have no idea how to fix it.
Deadzone is set at 0 on settings of course.

Thanks