I think weekenders had some type of imbedded rope in the sail that sled through the channel of the mast? The po replaced this with lugs on the sail that work very well except for one thing. He simply placed thin aluminum strips over the key way opening where the sail is taken on/off. The tension of pulling on the halyard causes the lugs to ' hang up' on the mast channel extrusion when hoisting the sail. Which means one hand on the halyard and one jiggling the sail...sooner or later I'm going ob! I know this was a popular modification. Before I start grinding Al bar stock maybe there is an easier way ?