I had a really close look and extra clean up of the steerer and yes, it appears the "corrosion" is not too bad. It seems to be mostly caused by the grease around the tube hardening and I guess starting some kind of reaction with the steel. Steering is fixed too but the lower bearing is less than smooth. But since it's the everyday bike, I can live with it. The headset is not standard, it was actually installed just a year ago to replace the original one that had crumbled. FWIW I'm extremely careful about adjusting and not over tightening the top cap. No new forks for now, might save for some decent road shoes and speedplays for the BMC instead. Also, completely forgot to take pics...
I had a really close look and extra clean up of the steerer and yes, it appears the "corrosion" is not too bad. It seems to be mostly caused by the grease around the tube hardening and I guess starting some kind of reaction with the steel. Steering is fixed too but the lower bearing is less than smooth. But since it's the everyday bike, I can live with it. The headset is not standard, it was actually installed just a year ago to replace the original one that had crumbled. FWIW I'm extremely careful about adjusting and not over tightening the top cap. No new forks for now, might save for some decent road shoes and speedplays for the BMC instead. Also, completely forgot to take pics...