I hope i am not too late! My little Spector family..
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NS-2000/Q4 Red
NS4CR Natural Finish (just bought it 1 week ago)
NS2A Tuxido White (just bought today)
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NS-2000/Q4 Red
NS4CR Natural Finish (just bought it 1 week ago)
NS2A Tuxido White (just bought today)

The pot contacts were touching the shielding paint in the cavity. 
