I'm not familiar with spools, cant help with that
The center one way will give a less pronounced effect of the one way diif, so it's likely worth a try.
Generally speaking, the car should be setup well with normal diffs, before mounting a one way. And the rear should be planted! Also, oneways are best suited for large and open tracks, and can increase speed through the large corners.
When driving with a one way, driving style must be adapted; That is, avoid breaking, and enter corners off throttle. This will give a lot of traction entering
the corner. With a center oner way, exiting on throttle, will be like a normal diff. With a one way diff, you can hammer the throttle exiting the corner
Hope this helps