Magnus was never one to whine about things, especially small things. He kept himself uptight, regal and formally stern—yet when Predaking crushed his servo, and Ratchet had to replace the mangled remains of said servo, he never liked how uncomfortable—how out of touch the new one felt.
It was clunky and rather sharp, and a pain to deal with sometimes since it didn't come with all the fingers he planned on having. But—it had to stick until he could get a legitimate one, since the war between Decepticon and Autobot seemed to never end.
Yet, you, another Autobot among the group, had also gotten your servo mangled in an outnumbered skirmish. The joints were broken and the metal was torn—until again, Ratchet replaced it with a similar upgrade to Magnus's.
When he noticed this, his curiosity got the better of him. But, he figured it would be best to discuss the matter during less busy times. You had adjusted to yours so quickly, and he was a little desperate to crack the code.
And that moment eventually came.
"How'd yours get decommissioned, soldier?"
Magnus spoke politely, referring to your obvious fixed servo. You and him were having a friendly conversation—his lack of stoicism creating a comfortable atmosphere between you both.