All this talk of vibration increasing the effects reminded me of the Podkletnov experiment."when the disc was accelerating due to the AC field, but not spinning, objects above the disc lost 0.05%-0.06% of their weight. When they spun the disc at 5000 rpm they noticed a larger weight loss of 0.6-2%.Another thing is, in the KML build it seemed to affect gravity around it, just like in the Podkletnov experiment.Could it be that the emdrive is firing Unruh waves and making matter around it less responsive to gravity, similar to what Mike McCulloch suggested?