Virtual shifting and Neo 2T only partially working

I have had annoying resistance issues with my Neo 2 T: while riding with a steady cadence and power output, the resistance briefly jumps up about 50 watts. I have tested using PM pedals, a separate cadence sensor and other tricks I have found from the forums, but nothing has helped. Today before my ride I attached a piece of flat metal to my NDS crank arm, so that it is closer to the Neo internal cadence sensor. The resistance jumps are gone. :partying_face: