''Look in the mirror'' has, except metaphorical also some other
meanings. We ''the Serbian warriors admire and love our
Russian brothers. Anyone can see that I usually refer to ''our''
chakster as my ''Slavic brother''. However no single Serbian
would ever buy an Lada if he can afford whatever German car.
On eBay I regular see Russian listings but would not even
dream to buy any ''hifi stuff'' from there. In some sense this
can be described as ''prejudice''. In my case a ''double kind''.
So I am not only surprised that my Slavic brother can afford
an B-60 but much more that the thing was/ is available in
the Russian Federation. Those new rich Russians obviously
changed Russian usual market conditions.
Now regarding this ''damn screw''. After long thoughts I decided
to buy an professional (aka German+ digital) caliper. According
to ''measuring is knowing'' principle no (other) argument kinds
can surpass this one. Anyway no chance to otherwise satisfy
Lew's criterions in such matters .
Well my steel (?) screws which caused the problem measure
at or on their ''nose'' 1.8mm while the moving collar trench
for the up and dawn movement is 2mm. My ''gun metal''
samples are 1.9 mm. So while the problem is about fractions
of one mm the results are very different. Those ''damn details''.