Polaris Headache Rack arrived on time today. I put drivers side top bolt in first, then passenger side lower bolt in, then driver side lower, so far so good. When I went to put the passenger side top bolt in I could see a slight misalignment. The first three bolts were just put in by hand so I had some wiggle room on last one. I did not bother changing to a different pattern, so I just ground a slight lead on the end of the 4th bolt and the bolt caught the threads of the ROPS and found its way home. I snugged up the rest of them and job was completed. Hope this helps.