Re: Compression post to backing plate?
The spacer is only a shim to facilitate getting the compression
post in and out. There's no reason you can't bolt the mast
step backing plate and compression post top plate together.
1st rule of yachting: When a collision is unavoidable, aim for something cheap.
"whatever spare parts you bring, you'll never need"--goboatingnow
"Id rather drown than have computers take over my life."--d design