So over time, the transducers start leaking when they're off. There's some kind of abrasion widening the holes. The reservoir is always empty in the morning. At least the leaks keep scale from accumulating.
Another stand update shifted the leaking transducers farther back & opened the door to adding horizontal farsteners to the base.
In a year, lions have managed to routinely create models which use minimal material & don't require supports.
Ordinary paperclips have worked well.
Didn't expect it to ever route all the overflow & leaks to the container. The last few models have eliminated any water spraying on the table.