On blind trials in which I didn't know what to expect, I got correct results 100% of the time. I know because after I got my results, I looked up what should happen according to the progenitor of applying this practice to this application.

I tested.

I observed perfectly consistent results which, for 3 pyramids tested multiple times apiece quickly becomes rather astronomically ridiculous odds to consider as being the case. The pendulum could pull counter-clockwise and enter a circular swing, swing straight, or pull clockwise and enter a circular swing. That's (1/3)^n for n number of trials. Just for the sake of calculating an example, if I tested each pyramid twice, that's a 1 out of 729 chance that I got lucky. Given that it was blind, it couldn't have been me thumbing the scale somehow.

There have been many more than 6 trials and I've done trials on other things besides the pyramids too, including a specific symbol printed on a piece of paper, pages colored with one solid color, etc. All trials went as they ought to have.

Thank you for the respectful question.