Hi OllieH, I've STILL not got round to sorting out my PCV system simplification after joining the catch can group buy. Just getting all the bits & pieces together so I can get it done next week/week after. Re the nipple on the underside of the manifold that needs to be blanked, did you just use a piece of the removed pipework for this? Also same question for the 3rd leg of the one way valve that needs blanking; did you just use a piece of the removed hose? Pointless buying a short piece of new hose if I don't need to.