Calling all VDH Colibri Fanatics and Experts ...

I know this AJ recommendation. He also says that the optimal antiskate is at 1/3 of VTF. But  in my case AO PU7 does not have the scale but the weight that you can slide up or down the metal stick with no scale. So my settings could be wrong yet I do not know where I am with these settings in terms of measured value. I think I would have to use some math formula to measure it. I measured all the elements of this mechanism and this is as follows: 
Metal Stick length: 17mm
Wheel diameter: 20mm
Weight mass: 0.73g
Metal stick weight: 0.30g
I think having the right formula I could measure specific antiskate force but I can't find that formula. Maybe that is physics formula.

You can try to measure AS so

https://www.dropbox.com/s/3i8rnq3p55zd5q0/AS%20Messung%20mit%20Faden.jpg?dl=

https://www.dropbox.com/s/blqmbi9o3ix5n72/AS%20Messung%20mit%20Waage.jpg?dl=0

I like the 2nd picture idea. We shall see how it goes. 

It is not the accuratest one, but better than nothing.

I was trying to set it by ear listening to some mono records and looking through magnifying at how the cantilever reacts (left, right, nothing) when the stylus touches spinning vinyl. Also watching how the tonearm behaves in the wider inner groove (is it slow/fast). But this is approximation I think.