After saving my Macgregor Venture 24 from the junk yard crusher and beginning the restoration process, I began to thoroughly examine all piece parts and taking inventory. The sails and rigging were in practically timecapsule shape, (the #2 reason why I took on the project - the Emaculate Hull was #1). My question to our expert is, "How much excess stretch near the luff of the Main (mostly the midsection) is exceptable"? The sail material is in great shape and the seams are strong and tight. Yes these are the original 1970 sails!!