Our 272 has a Doyle Stack Pak and we were having trouble getting the sail up more than down...one night while dreaming I dreamed that if I would loosen the main sheet and the boom vang and essentially raise the boom to dead level with the topping lift, it would open up the sail cover and take the pressure off the slugs completely....It was a good dream, it works perfectly now....the downward slant of the sail and boom was causing the slugs to bind.....plus the sail just falls in the bag for the most part...is of course held in place with the lazy jacks.. .....try it see how it works....Pat