First, these are great. They make alignment much easier. But, I suggest that you check a couple of things that might solve alignment issues with OEM straight posts. 1) see that your posts are seated against the stops at the top. 2) check your that your stop collars are equally adjusted. I had those issues but adjusting them still left lateral adjustment slightly off. These posts solved that. However, vertical adjustment requires lowering the posts almost below the top guide hole. Close.