GSO RC8 primary mirror collimation

[pmrid]

Could anyone tell me which of the grub screws on the back of a RC8 are the pull and which the push screws? I assume they are the usual antagonistic sets.
I've been checking the collimation on my RC8 and see that both the secondary and primary need a tweak but I'm unsure about which is which grub screw on the back (a smaller black one or the slightly larger stainless steel one).

Peter

[KenGee]

I came across this https://www.astronomics.com/documents/astro%20tech/astro-tech%20at8rc%20manual.pdf

[Paul Haese]

The large screws are sprung loaded and the small screws are used to lock off the adjustment with the larger screws. You need to use a tak scope too.

[pmrid]

Thanks guys. Paul, I think I now know where my uncertainty came from. The link KenGee gives is to the AstroTech flavour of the RC8 and at Page 3 of that manual, it gives the small black screw as the adjusting screw and the larger silver one as the lock screw. Just to make life interesting!!!

Peter