I may have an answer for you. Your Prisma stainer only runs the heater when
needed. With full runs, the oven stays warm, but later stain runs allow for
the heater to cool down. When your rack goes into the dry station, the heat
comes up from the bottom to start to dry the slide, thus the
For your entertainment, I have a bizarre phenomenon to share with the group:
I am occasionally losing the TOP section on a deeper cut H slide.
Full run of daily slides do not show this issue. A deeper slide cut later in
the day might, or a deeper slide cut first thing in the morning may, when
