IH McCormick B450 Getting it to start

This Follows on from Previous video of buying my first Tractor which we discovered the the rocker to be bent causing it to only murmur when trying to start it. In this clip you'll see the a replacement rocker fitted along with a service changing the oil in the engine as well as the filter, i did change the oil in the air filter oil bowl but forgot to film that. I took the the sump off the bottom to clean gauge filter that supplies the engine with oil after my brother was given sound advice. fitted new rocker and sump gasket after Stu Tune reset the distances with the Feeler gauge at .22 i believe. After it still not firing i decided to tackle the fuel side having to fit a new filter housing with simms fuel filters been hard to get hold of and repipe it in ⅜" copper tube as the flexible hose's just looked pants. i took apart the glass bowl and tap underneath the fuel tank to clean as the tap didn't shut off at all it seemed. after that i struggled with a cross threaded lift pump and various bits off the injector been stuck as well as the clutch which Stu Tune managed to boss with ease due to his incredible Mechanical expertise! after which we final managed to be able to hear her sing and took it for a bezz up the road which only uncovered more problems to fix.