Brakes on 28 Hudson

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Dear Hudson experts,

   I'm going to run the Great Race again
this year in the 28 Super Six Roadster. My navigator and co-mechanic is David
Hewitt from Granbury, Texas(Headquarters of the Great Race).  We need some
help. A) The brakes are pulling to one side, There is not much pedal
left, and C) the bronze adjusting nut is worn
out.   

   Robert C. was kind enough to adjust
the brakes at the start of the 98 Race in Tacoma, but I have forgot
most of what he told me.

   Is there a source for the
Adjusting Nuts ? How do you start to adjust the Brakes ?

What could cause pulling to one side ? 
Thanks, Bob H.