Another thing about tuning on MOOGs is, that sometimes, if you want to detune one oscillator to another, you only have positive tuning... so if you, say; have three oscillators going, and you want them detuned, then it will sound a bit off in relation to other sounds simply because oscillator two is for example, tuned +10 cents, and the third at +20 ... that will make the whole combined sound, sound like it's pitched with a fundamental that is the average of the three... at +10 cents... on other synths you can have one tuned at 0 cents, and the two others at -10 and +10 cents, leaving the fundamental to be at 0 cents ... the average.
I don't know if Mother 32 has both positive and negative tuning on the tune knob... if not, this could have some influence... even if the Mother32 does have both negative and positive tuning, the user may have tuned them only in the positive direction.
I have this problem with Sub37... simply because oscillator 1 cannot be detuned at all.... only oscillator 2 can be detuned... even though it can be detuned both positive and negative, then detuning oscillator two will also move the average tuning with it... I cannot choose to tune oscillator 2 to +20 cents, and oscilltor 1 to -10 cents.... which would be the best.... instead I will have to use the main detune knob to shift the average back down to 0 cents... makes it a bit more complicated...