Bought a Ranger 28 tall mast sloop and has a add on boom .Not original. Mainsail is incorrect fit in every way. Would anyone have correct ( original ) dimensions for luff, leech and foot for mainsail ? And true boom length. The present dimensions are luff = 31 ft - 5 in. foot = 9 ft.-3 1/2 in. leech = 32 ft.-8 1/2 in.