I can hear debris moving in the top tube of my steel frame, I'm assuming internal rust as the frame once had a repair near the bb for just that. The tt is sealed at both the St and ht so how could moisture get in?
Because it's not actually sealed.
Why do you think it is?
@MrBaklava started
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I can hear debris moving in the top tube of my steel frame, I'm assuming internal rust as the frame once had a repair near the bb for just that. The tt is sealed at both the St and ht so how could moisture get in?