Why take of the back cover?
Lock one output. Put a pointer on the input.
Turn the output 1 revolution and count the turns + degrees on the input.
By My Calcs.
3.33 = 3 rotations + 118d
3.62 = 3 rotations + 223d
3.92 = 3 rotations + 331d
So it should be fairly obvious at ~106d seperations.
TT
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