Dividing Head Question (lose, slop in worm gear)

[UMDJesse]

Huh, it's been a couple years since I re-re-built my yellow iron dividing head, but... isn't there a spring between the plug #15 and shaft #40 on the print? I know my RT has one. My dividing head backlash must be completely sublime compared to what you're getting. I just don't recall having any trouble with this guy. I did replace the chinesium bearings with German bearings, as I tend to do. But that couldn't be it. Odd.

There are no springs in the unit. Part 15 and 40 just butt right up against one another. By tightening or loosening part 40 I can adjust the depth of the worm gear and set tension.