Neugart PLE 40 Stock Motor Mount - What size are the holes in yours?

The stock mount on my PLE 40 gearbox has a hole on each corner that accepts an M3 bolt but is too small for an M4 bolt. Yet the PM build calls for using an M4 threaded rod here. Did everyone have to enlarge these mounting holes or is my mount different? Or am I missing something? I don’t want to drill it out until I’m sure Thanks!

MountHoles