I had a north 3dl on a catalina built in 1996,Used really only 3 series of wed night racing. I disintigrated in 2000 on the one time I used it and looked like a fish net. Here in the midwest summers can be hot and I wonder if the adhesive is drying out causing the failure. The manufacturers say they have improved this problem but how can I know for sure? My J-30 has composite sails that I use a few times a year and the rest of the time they are stored in the cool basement. I purchased dacron used sails to sail on the weekends and they are probably over twenty years old.