You have to enjoy the mental image of all these Russian engineers bent over slide rules trying to make sure all the crap worked because the stupid Americans stuck with the Imperial system, though. Best argument I've ever seen for staying away from the evil Metric system. I'd wager one or two of them shot themselves in the head due to the sheer horrible drudgery of it all.
Shooting themselves? Nah, they probably drank some good Vodka, fought about it while drunk, and then laughed at how they stole our planes. I can't blame them though. Their planes around that time were utter trash.