[Jamie]

Morzh, I've never worked with your model, so keep in mind that I could be wrong. I think the two thick bushings probably go on the front of the chassis. Look for two metal posts sticking out on each side of the front of the chassis, and two holes in the cabinet. They cushion the front of the chassis up against the cabinet. The three smaller ones are for mounting the chassis. There should be holes in the board the chassis sits on. There should be four of them and the missing one may well be stuck in the cabinet. The other four, I am not sure about.

I am sure someone will speak up who knows for sure, but maybe my info will get you started.