Posted for "Bucky Whittier" <buckyw@sbcglobal.net>:

 Somewhere in the past, Matco or Lancair had a drawing showing tubes
 installed in the master cylinders on the copilot's side to prevent brake
 lockup.
 
 The drawing showed the tubes and how to make notches to relieve pressure if
 the brakes were applied on the copilot's side.
 
 I have the old style cylinders and remember making the modification, but
 cannot find the drawing.
 
 Bucky Whittier
 
 N360BB