In a message dated 2/22/2002 9:07:37 AM Pacific Standard Time, accf_clb@xxxxxxxxxxxxxxxx writes:
The '58 Constant Control has a round "bell" cover at the top
where you find the adjusting screw, the '57 Coaxial has a square
cover for the adj. screw.
Thanks Phil, mine does have the round cover showing on top of the steering box.
Denis RWC