Vic - numbered comments map to your's....
2. Mast at fractional is too far forward when set further back than 25mm at step ... I am thinking it is impossible to get Max headstay tension and length unless at min step set back.
3. continue to wonder why most of the comments in these two threads talk about the need to change factory positioning of the step {Production line error? or just not enough feedback in the manufacturing run}
5. is there any advantage to being set at 40 mm which seems to be the max set back over 25 mm which seems to be the min set back?
6. the races that killed me this week were talking VMG speeds of ~3 kts. real light wind races.
#2 - correct. All the moving parts work together for optimal setup.
#3 - I think you answered your own question. You'll need to go through and check all the rig measurements. Note Dave Erwin's comment about his mast plate being off center when they rebuilt hull #87.
#5 - I guess if you had a main cut for that setup, it could work, but that is not what the sailmakers build the OD sails to.
#6 - every little bit helps to tune for light air. Your smaller jib doesn't help you either in those conditions.
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