A while back I made a homemade tram for my mill, drill press etc. Day before yesterday I had a crash that knocked the mill tower out of alignment. (Forgot to take some secondary clearances into account when deep pocketing) As I was adjusting everything back into place I noticed my cheap HF dial indicator was getting all sloppy, so I ordered a new Starrett one. I figured I use it often enough now to justify paying for a decent one. This morning as I was pulling the dial indicator off my tram bracket I noticed the screws on the back of the indicator, and thought, "Gee, I wonder if those are loose." They were.
A gentle tightening and now its as good as it ever was. Its still an HF dial, but now there is no mechanical slop in the case and it snaps back to the same exact spot on the dial every time.