if it's a new rim and the bike shop can't get it round, try another bike shop? 3-4mm is quite a lot, is there a low spot opposite the bump where you could reduce some spoke tension?
@rustynuts started
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if it's a new rim and the bike shop can't get it round, try another bike shop? 3-4mm is quite a lot, is there a low spot opposite the bump where you could reduce some spoke tension?