|From the Land of the Rising Son|
1. The part is defective;
2. Your correspondent is defective (and/or the handle of a squash racquet is not the appropriate tool); or (most likely)
3. The car has shrunk slightly.
No matter, it's back to the front to brave the iniquities of the BQE. And another thing (as Myles na Gopaleen would say). Flann O'Brien has proposed a solution to the pothole epidemic:
Anró na marcuigheachta (literally saddle-soreness) and has the effect, paradoxically enough, of making rough roads smooth. Try it and see." (From At War.)