Keep posting your progress. I'm getting pretty annoyed at replacing shock ends on my stupid big bores every other run and spending $15 on a parts tree to get 4 of them. I'm getting nearly up to double digits on shock ball ends since I got the truck in July last year. I've spend $45 on parts trees to get 12 stupid ball ends...
Really wish I had a drill press... I took one of the larger tie-rod ends and drilled a 3mm hole down further almost to the ball end, then cut off just enough of the neck so it would be the same length as the shock ball end. My drill got a little off, so the hole I drilled isn't exactly straight, but it appears there's a bit more material on those ball ends where mine keep snapping off.
I have a feeling my issues with ball ends is related to the RPM arms and running single big bore shocks. The arm twists upon impact or on big air landings, which snaps my ball end off right at the end of the shock shaft threads.
My broken ones vs the one I modified to try:
On the truck, modified end on the left, stock on the right: