I remember going on "shooting adventures" with my brother-in-law years ago. He had a Nikon F2 and I had a Minolta SRT102. When he would change a lens, it was a rather complicated, time-consuming "ritual" (see Post #2, above), while my Minolta lens changes could be done in a FLASH -- in the dark! For some reason, he felt his Nikon was superior.
As suggested, make sure you follow the "Nikon Boogie-Woogie", exactly as described. I hope that's the problem.