The importers (ATI - I believe - this was 10 years ago) of the mismatched Russian parts kits seemed to not care about keeping the kit parts together.
They also made an attempt to make "milled" AK rifles. The receivers resembled NOTHING ever made on the European continent. Maybe they worked but they looked awful.
I believe the Russian trunnions from those kits may have been damaged during demil. They seemed to hire the lowest cost workers to demil those kits. I will forever spit at ATI for that choice.
Me in charge of a low budget demil project.