Sail cloth should not be left under tension. After sailing, always release your batten tension. Never leave sails fully rigged for long periods of time. If your sail is to be left rigged, release the downhaul and outhaul until the mast has no bend. It is also advisable to unhook the power-on Head elastic during extended periods of rigged storage.
Camber batten too tight, release a little batten tension.
Cam is over-rotated, need more downhaul. Camber is over-bending, need more downhaul. Mast diameter is larger than normal, lengthen the webbing straps on the cam. Foot batten is over-tightened, release some tension. Sail is too deep, try more outhaul and downhaul.