Adjusting a Skywatcher Focuser

[David Smith]

I kitted out my Evostar 120 with the Skywatcher upgrade focuser some time ago now, recently however the motion seems to have become a little stiff. I was looking at the plethora of screws / bolts on the couser trying to figure out which one might allow me to adjust the tension. Looking at this article on Equinox focusers (which look very similar) I believe it may be the one highlighted in the pic below. Can anyone confirm this? Usually when I start tinkering with stuff like this something important falls out and will not go back in

Thanks

[Dr_Ju_ju]

That, and the silver knob, just above it..  The 2 grub screws either side, even out tilt.