Wasn't on that specific tour but I've done Waverly twice now and both times something felt off around the body chute area. First visit I put it down to atmosphere and suggestion, second time I had my EMF meter spiking consistently in the same spot on the fourth floor which I couldn't explain away as easily.
The thing with locations like that is you've got so many variables - electrical interference, geomagnetic activity, people's own energy affecting readings. But there's definitely something going on there that doesn't fit neatly into any single explanation.
What were you actually experiencing? Physical sensation, auditory, visual? Makes a difference to how you'd interpret it. I'd be interested if anyone on that weekend tour got anything on kit because a few people I know who've visited recently have mentioned the fourth floor specifically without me prompting them.