Son and I are making some changes to his miata. He wanted spacers which leads to my question. Front went on okay. The back spacer does not fit because of a non metallic ring (magnet doesn't stick to at least) that is on the hub that the spacer hole is too small to fit around. Is it a spacer issue or do I remove the ring? The spacers have the bolts attached. See picture. Any advice sppreciated. Thanks
