What other pads are connected to the thread? Is the path connected to these particularly longer and/or leading to a bigger patch of fabric?
Also, can you double check that there is no continuity between any of those three pads? The fact that in one of the figures pad 6 is not maxed out suggest that there may be an intermittent contact of sorts?
Could you remove all the wires and check that the readings on these pads look similar to the ones on the other pads with a prescaler value of 2?