That's what I was about to suggest, but you were faster than I .
I have another exercise for you: right now, on startup the four instruments zero one after the other. First NAV1, then NAV2, then ADF then the compass. It's very easy to make them rotate at the same time and stop on zero. Try figuring out how.
I will and I have a suspicion it is similar to the digital to synchro sketch.