As others have reported, I at first couldnt figure out yesterday how to get in the top two machine screws in.
Not wanting to take the machine apart, I managed to get the two screws in place, screw them in by hand as far as I could, then I took a hex driver from a set I have and used a small rachet to drive the screws home.
Barring that, an Allen hex key cut down would have fit.
Now if I can only figure out how to get my man sized fingers into the space where the screw is to hold the dust shroud...
AJC