Very sage David. It's also the case that many of the FSU cameras and lenses, being so inexpensive, will not have had the same care, attention and expense lavished upon them as more valuable things.
I'll await my lens with interest. I have, in my normal fashion, succumbed and bought a Zorki 3 from 1954. I am entirely certain that both lens and camera will have issues that need sorting. Neither set of issues will be in as serious need of sorting as my expenditure on things I don't need!
Leica M2, Nikon D700, Bronica RF645, Leica CL, Summicron 40mm, Rolleicord Va, Hasselblad 500 CM Zeiss Planar, Leica 50mm Summicron V3, Hasselblad PME51 metered prism, Zeiss Ikon Super Ikonta 534/16 & Ensign 820 Special - all gone.