Equal thickness here as well and big block Olds thrust bearing.
I did mine on the cnc mill in one operation for tight parallelism. Aircraft grade aluminum raw stock and tight OD and ID... same results can easily be achieved on a good manual lathe.
I don't think I ever glued them or anything like that.. it's all just snug and tight
My findings showed variable block groove OD between blocks.... so I see this always as a custom job
KRIS.
PS. click pics to enlarge
