The vinyl window can be cleaned by washing with fresh-water and polishing with a dry towel. Sail cloth should not be left under tension. After sailing, always release your batten tension. Never leave sails fully rigged overnight. Always release the downhaul and outhaul until the mast has no bend.
Camber batten too tight, release a little batten tension.
Cam is under-rotated, need less downhaul. Camber is over-bending, need more downhaul. Mast diameter is larger than normal, lengthen the webbing straps on the cam. Foot batten over-tightened, release some tension on the foot batten. Leech is too tight, try more downhaul.