Steinberger R trem

[straycat]

Any links on how to set these up? Also what is the big knob in the back adj tension?

[Rsmacker]

https://www.steinbergerworld.com

[straycat]

I've been there(some help) but I was wondering what the two set screws on the top do.I cant get the trem arm to stay in its hole.A blown apart view would be a great help.