Got a brand new frame with threaded ISO BB; ISO DA 7700 cups are so tight they're not screwing in. Tried installing a 5500 BB and it slides in easily.
Does it sound like the BB threads need chasing or is it something else?
Almost certainly. Any paint in the threads?
@Goyt started
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Got a brand new frame with threaded ISO BB; ISO DA 7700 cups are so tight they're not screwing in. Tried installing a 5500 BB and it slides in easily.
Does it sound like the BB threads need chasing or is it something else?