The first step in the valve
alignment process is to measure your horn to see how far the
valves are out of alignment. We use a proprietary measuring
system that includes tools designed by Bob and port
prioritizing that ensures the optimal playability and
evenness of your horn.
You will receive a card
that will show the up and down stroke measurements of your
horn before the alignment.
example, Al's Bach was out by a considerable amount. All of
the valves in the upstroke position were positioned too low,
as notated by the negative numbers. The first and third
valve downstrokes were too high, notated by positive
numbers, while the second valve was too low.