Gearbox issues

[Erich]

Fxxckin' 'ell. So after much modification to a mid twenties three speed, it has the boss for an additional mounting bolt, I have discovered an issue. I have modded the clutch etc., to the Terry Griffin specs. And now I find that there are three large cracks on the O/S boss where the clutch shaft goes through the bell housing. I have no idea how or when this occurred. Weld it up or is that a fool's errand? One crack appears to have been there for some time as its full of oil/grease. Have others had this issue and what causes this?

Erich in Mukilteo