These fenders have been tested and fit GREAT!! We have sold over 100 of these and this is the first complaint on these. We have had a handful of shipping damages, that is expected with such a thin part.
The two small tabs infront of the door on the chassis are very easy to bend as well as the small front tab which mounts to the core support, if you had attempted to remove the fenders with those bolts still attached you could have very easily bent the OEM chassis tabs, or if the vehicle was in a wreck prior it is possible those tabs were bent, making it more difficult to fit the new fenders. Also, the tabs on the fenders themselves could have been bent in shipping.
But, with that being said, the two different chassis we test fit the fender on here fit identical to OEM.
It is likely that either your chassis and/or tabs were damaged, or the fender was damaged in shipping. These fenders were made off 100% brand new, un-used, OEM Nissan fenders and are made to fit exactly the same as OEM.
See Images below.
