It was so long ago, but without the turbine in it’s accessible to both locations. One is right in front of the former that holds the back of the inlet ducting and the other is right behind the rear LG former. I used a long 3” 4-40 bolt in one end of the insert to guide it in position and then another screw in the bottom to hold it tight. The long screw also helped me make sure it was vertical before gluing. Then i added a bead of hysol around the knurled spacer. Once cured i could remove both bolts.