Hi Nick,
Welcome to the forum. I realised tonight that there have been some spam posts made in the last month, which I have now deleted. As a result you may have missed the request at the top of the "Introduce Yourself" page to make the subject Line your name. That allows me to add you to the list of registered users, when I also grant member rights that allow you to post elsewhere on the forum. (That will allow you to post in the "Help Desk" area, a better place for your request.)
I know it's old but have you tried contacting "toothless" about his post at:
https://forum.seahawk17.org.uk/Mast-and-rigging-Nr-Glasgow-tp4025340.html(Click on his User Name by his post and it will take you to a page where you can email him.)
I confess I have been slow at responding to messages and chasing up old "For Sale" posts. Do let me know if you have tried and what the result was. (Blame my 78 years of age and sale of my SeaHawk in 2018 for not giving the attention to the site it deserves.)