[bojan]

I also struggled with polar scope a bit..
First you have to make sure the reticule is aligned properly.
You can do it during the day, on some terrestial object, not too far away (electric pole or roof or somebody's TV antenna).
It is a delicate business because you can very easily damage the reticule if you tighen it too much with screws.
I modified the reticle by placing inside the straight spring wire next to one of the three screws, so I can almost remove it and the spring is holding reticule in place.
Then, by adjusting the other two it is possible to move reticule in the dead centre of the RA shaft (you have to rotate the mount around polar shaft to check the centre.. 180° rotation does the trick). Then you can carefully tighten the third screw.

Forget about instructions, the only thing you really need to know is the orientation of Octans asterism, and this can be checked with CdC or any other planetarium software (be aware, the polar scope inverses the image). Then as Brendan advised, you adjust the RA shaft elevation with screws and bolts.

I noticed that Octans asterism on the reticule is not quite accurate, some stars are not quite where they should be. It is as if someone said at some point in time "South? What's that? Oh.. it seems someone is living down there.. lets do something quick about it"... that is why we have this silly reticle, which is quite useable on Northern hemisphere but not as easy here down under.

So, I posted couple of questions for southern only reticule on CN and elsewhere (I also asked Bintel people but they did not have a clue as to where to get one), but it seems it is not available...

Then, I attempted to erase all un-necessary constellations (Cassiopeia and Big Dipper) but it did not work neither with acid (from car battery) nor with NaOH.. the drawing is done by metal deposited in the vacuum, and it is not Al, more likely Chromium, ant this one is quite resistant to corrosives). Then I gave up.

If I had my photo-lab equipment here, I would place a piece of micrographic film in place of reticle and take a picture of Octans through the polar finder objective, then develop it and produced the new reticle this way. Unfortunately, I do not have microfilm today, neither I can develop it.
Another option is to print the new reticle on foil with laser printer from planetarium programme.. scale may be a bit of a problem to adjust but it is doable I think.