For those of you regarding Z Spar and U.S. Spars.
Z Spar which is a French owned company was a major supplier of masts for many manufacturers in the U.S. to include Hunter which their facility was close by to Hunter. In the early 90's they chose to purchase Kenyon Isomat with intent to close the Florida plant moving to Charlotte, NC. Of course Kenyon Isomat laid off everyone and in the beginning Z Spar did not have enough help. This left many in a quandary to include Hunter. I should know as I had a couple of boats without masts for a while and could not sell. Everyone was of course upset with Z Spar. Eventually, Hunter found a new supplier, Selden Masts and it was a great marriage who now sell to Hunter, Beneteau and Catalina.
As for Z Spar, they closed and have not returned to the U.S. for reasons I will not discuss. However, the parts for their masts and booms previously sold can be purchase thru U.S. Spars which in essence are Z Spar parts. Not sure if the same folks who own Z Spar are same owning U.S. Spars. As for parts from Rig Rite, not sure on that as I am a retired sailboat dealer.
As for the small boats, Hunter purchased from other suppliers for one being dwyer. If you need parts, simply look on the mast as most mast manufacturers usally put an emblem or sticker on their masts.
As for Kenyon Isomat, the reinvented themselves to Charleston Spar also known as Sparcraft in the same old facility with the same folks in Charlotte and is also a very good company as well. So if you have a Kenyon Isomat spar, contact Jim Culibert at Sparcraft.
I hope this will explain everthing.
dave condon