I hope you're using a timer?I forgot to mention that I've been turning the light on an hour early in the morning in hopes to coax some more experience layers into laying.
Sand then glue shut if needed.I could probably put some gravel in there to weight them down though.
Golf balls work too, if you have access to those.
We want, chickens laugh.I just really, really want them to lay in the correct nest box.
You'll get the last laugh tho if you are P&P.
persistent and patient.