Oil seal shaft/journal repair, turning, hardening bushing for an Agria 6000,Imt 506 engine

Repair job for an agria 6000 clutch hub which had a deep scratch in the oil seal seat/journal, instead of replacing the clutch hub, I repaired it by turning a carbon steel bushing, 27 id 30 od, then hardened and hammered into place. The engine now runs very well, there is no more smoke, and no more air/oil enters the combustion chamber, causing the engine to run badly burning gear oil