Quoted from DnDPins:
The spinner tested fine on the band side but was not null on the otherside. I cut one side and tested out of circuit and it then tested null. I went ahead and replaced the diode but still have the same problem.
that does not sound right. spinner should be no different than any other switch. so one direction .5-.7 other way should be null, OL no reading. is the spinner in same row or column that you are having issue with.