Inlet manifold removal on a Land Rover Discovery 4 SDV6

I recently purchased a 2014 Land Rover Discovery 4 LR4 SDV6 from a car auction, but soon discovered it has an oil leak. I know it's a Land Rover, so it's meant to leak, but its leaving a mess on my driveway! After a bit of investigation, I find the leak is coming from the passenger side (UK car) inlet manifold. The inlet manifolds both look new, but unfortunately I don't have any record of them being changed. So my plan is to replace the manifold gasket and hopefully stop the leak. All parts used were purchased from Malting 4x4. Manifold gasket used: https://maltings4x4store.co.uk/inlet-... Injector copper washer: https://maltings4x4store.co.uk/inlet-... Injector O-ring: https://maltings4x4store.co.uk/inject... EGR gasket: https://maltings4x4store.co.uk/emissi... Leak off pipe: https://maltings4x4store.co.uk/land-r... Injector leak off O-ring: https://maltings4x4store.co.uk/inlet-...