I have got to give a big thumbs up to Simon at Barleycorn.
I have ordered many, many pounds worth of stainless fasteners and fittings from him. Everything I have received is truly excellent, parts are correctly de-burred, threads are perfect. When it says 3 and 1/2 inches, its 3 and 1/2 inches.
None of the nuts are deformed, each is identical as it should be. Most parts have the option of plain or polished for a small extra charge.
Their website is easy to navigate, they except pay-pal, and if you look around well you will find damn near any part you need for an A10 or a Goldstar. He even makes it easy with part numbers or a few words in the description telling you its for GS or A10, if its for Aluminum head or Iron head, if its for early or late, etc.
We really need more vendors like this, and less like the ones that are becoming "big box stores" for Wassel and parts made in India.
Lee