Thanks BG, things look OK so far. When I lived in SoCal I probably wouldn't have needed to fill the channels either, but things are so different here in a high desert climate.
These eggs were shipped from a low altitude, so are less porous than local eggs. To help, I'm keeping the vent wide open and the humidity pump was running almost constantly to keep up. Once I filled one channel, it maintained at 40% and the pump only inputs more water once in a while.
Eggs were set yesterday at 1PM. Turner is off for 2-3 days to help air cells reattach. Hoping for the best.