The dual jib halyard tension adjustment may be dual main downhaul adjustment?

Tell me if I'm wrong, but I think the 5.2 has positive rotation? ie, a boom? If so, the rotation control is a limiter, and is used to keep the shape of the mast and sail (leeward side) in a nice smooth airfoil shape upwind, and the mast rotated "a lot" downwind. The reason for more rotation downwind is that your apparent wind will be lower and so a draggier, lower-speed, higher-lift foil is needed.

If no boom, then the rotation control should be forced-rotation. The boom traveller (or hook-and-eye system) sets rotation to weather, and the forced-rotation hoop pulls the mast to right angles with the boat downwind. I've never broken a batten by forgetting to jibe the mast (Oh, I've forgotten...the battens just haven't broken) but I've heard tell it's possible. Good luck.