Do I need both of these kits to rebuild my EAS block in 2000 P38? Or does the X8R kit contain the everything but the bolts? There is some language in the sticky notes about need Atlantic British's kit STC 1803 but not sure if those same orings are already included in the full X8R kit. hard to tell for sure looking at the pictures. For example I see large black diaphragm in the AB kit that I don't see in the X8R kit....