Johnsqual":3etd9lx8 said:Based on my own unfortunate experience, be sure to check the
headtube for cracks, especially if the headset has been changed (look for cracks that run vertically up or down from the headset cups/races).
It seems that aluminium is more vulnerable to cracks if a headset is
badly fitted.
Good luck,
Johnny
Check the steerer tube, too - an over-tightened quill stem expander can cause an alloy steerer to bulge and develop cracking.
David