Shimano's 6400 headset from the same era (600/Ultegra) should have a stack height of 33.5 mm.
Are you sure that you had everything installed properly (fork crown race slammed to the bottom etc.)? Is there exessive paint on some of the surfaces? This might be the case with a NOS frame.
Shimano's 6400 headset from the same era (600/Ultegra) should have a stack height of 33.5 mm.
Are you sure that you had everything installed properly (fork crown race slammed to the bottom etc.)? Is there exessive paint on some of the surfaces? This might be the case with a NOS frame.