perhaps some screws that hold the case halves together that are not also used as mounting screws. there is a small amount of spring tension
that must be taken into consideration during mounting.
I think this may have contributed to my snapping a screw off during test fitting. Your tech folks told me to send it in and you would
repair it and send it back. Thank you for such great service. quick turnaround and you also updated the firmware and supplied an new screw.
Outstanding techsupport. thanks again.