The piece of hardware which holds the sail in the mast slot is called a Track Stop or Sail Track Stop. They are available from West Marine. See page 904 in the 2003 Master catalog. I'm sure nearly all boat hardware dealers have them, if you have any in your area. Doug, my check will be on its way tomorrow. Though no longer a Montgomery owner, I really enjoy the website and e-mail list. You have done a great job! Russ Browne Sailing P.J.Puddlejumper 2000 ComPac SunCat #16 Branched Oak Yacht Club On the prairies of Nebraska