Disco 2 I need to stop reading about LR's. (TD5 Oil Pump Bolt)

had one oil pump bolt back off.it came out as far as the inside of sump pan and rattled around in there.sproket did not come off.

I also need to stop reading about these D2s and their issues. I too read about the oil pump bolt when I bought mine a few months back and thought oh sh*t so I bought a new one...........guess what's it's still in the packet. Now I've read this I really do need to do it, the injector harness too and the 3 amigos are winding me up..............oh and I suppose I better fix the oil leak too. Dam nearly forgot about checking for leaking injectors which is not so easy when losing oil and can't determine if diesel is topping it up