J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment prebend

Letting out the headstay 3/4" would increase the pre bend in the lower section.
It seems your backstay is too short and holding back the tip of the mast - On FW we had to add a 3" toggle to get enough slack - we always keep the sag in the backstay 3-4" and very rarely tension it below 15 knots.