Yes , I have posted it there. Response was that there could be a tool machined to help install it, since it was made from a 1/2” bar of steel, I would assume the shackle was left 1/2” away from frame and not bottomed out.
But that is just an assumption on my part and all I can go by until someone with specific knowledge can help me.
Even RareParts who sold me the shackle didn’t know of a specific tool....