If you are still looking for a 1019 headshell, there are two on auction presently on e-bay (ending within 2 or 3 days) for a reasonable price still.
As for the noise in your 1228, sounds like your motor should be lubricated (new oil in the bearings). You will find all the procedures on this forum: just enter "lubrication" in the search box at the top right of this page.
As for the stacking spindle, I did the same as you did and it works again like new.
Hope this helps.
Dual 1019/Shure M97xE/Jico SAS stylus.
Thorens TD 146 & TD 166/Ortofon OMB5 and OM40 carts.
Marantz Mod 6170/Marantz E 5000 cart.