Yeah, I had the beam problem. The guy that worked on my car had removed the mounting threads in the chassis after all and stuffed up when welding them back in. I have had the chassis sorted by another outfit who did the work on a Car o Liner. The chassis measures up perfect now and the beam is mint. It all clamps together completely stress free.
I am only confused about the combined assembled height of the solid mounts in the beam. It doesn't match the length of the steel sleeve that was supplied with the polyurethane bushes. It seems to need an additional spacer for it to match up to otherwise consistent heights.