While checking out the maximum extension that the bellows that fits mine can reach (740mm without gross overstretching), I saw that it is enough to focus the Nikkor T 1200 at infinity (755mm) with an extended lensboard or Wista tube. But the mechanical extension is only 560mm. Wista for instance has a stronger long extension bed profile that replaces the last section of the original one for long lenses. I don't think that Linhof has ever made such an item, but has anyone tried a DIY solution? I ruled out the long tube from lensboard for it seems that this would really add too much stress and the bed is too weak.