How much 'bow' does the spar have when there is NO tension on the rig at all. I mean loose, or on horses.
Tell us in inches or relative to the mast width.
Is this 'bow' concentrated to one area (as in Kink or Bend) or spread evenly throughout the length of the mast ?
You indicate the 'bow' is in between the spreaders and the masthead, but imply you can remove it with tuning ? How tight are your shoruds when you consider the rig 'tuned' ?
More info please
