Ditto whaty SD said. The vang MUST terminate at the base of the mast, or whenver you trim th emainshet you;ll need to also adjust the vang. Seems lijke that would be a pain.
I'd bet there's been some confusions omewhere along the line, and if you look around th emast collar, you;ll see a spot for connecting the vang
Certified...in several regards...