Hi all! I am trying to build my first custom bike, based on Specialized Diverge frame (2015?). Bearings are original, all good, I don't see a physical difference between them so not sure which one suppose to go as upper/lower one. (all I could find is that for Specialized Allez lower and upper bearing type is the same, probably silly but I simply assume it should be he same for diverge?) But tried both ways and when I fit forks there appears a small gap between lower headset cup and fork. I know it shouldn't be like that because I saw same model bike the other day and it sits very evenly. What am I doing wrong or what am I missing? Any advice appreciated!