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?
No, the threads are clean but it's just an insert in carbon frame; perhaps not of the highest quality. Will get it chased. Thanks for confirming.
@tallsam 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?