Thank you for that information. The first link, especially, seems to be spot on to what I have been looking for.
What the link tells me is that there are only a few places doing the casting/forgings and 99% of the manufacturers are just machine shops from these few foundries.
Once you do the first one...you’re hooked on it. So, enjoy yourself, it’s easy, most of all.. welcome to the addiction.
BTW their stuff is first quality, not blems.