I bought a rear rack so I can finally switch from backpack to pannier. My bicycle is 28" so I picked a rack that can cover 26-28" with "adjustable height screws".
Upon trying to mount it, I realized that the mounting bracket arms are too long for my frame.
Going back to the store and trying to replace the rack, the guy at the store tells me this is the norm and that I should just cut the arms to the length and drill the new holes for attaching them to the rack myself.
Since the part of the world I'm living in isn't exactly known for an amazing customer service, I just wanted to ask if it really is the norm or if the guy just blew me off, and I should go to the store again.