Sounds like you are already making progress and have had a good offer of help.
Just to let you know, I have a Morgan 30 (1971) based at Flag Harbor in Calvert County, MD. I have re-plumbed and rewired etc and would be happy to add any advice I can, if you need it.
Leith (rhymes with teeth) is the port of the City of Edinburgh in Scotland. A Leither is someone who comes from that area.
I must go down to the sea again, to the lonely sea and the sky - I left my shoes and socks there, I wonder if they're dry?