Here are few on my 2 meter Aries

I use flat head 4-40 machine bolts and recess them for a flat fit on the side of the fuse. Make sure to use locktite to secure the nuts. I have had a few vibrate off before.

I use a 1/4 balsa root rib with 1/8 lt ply to reinforce the area at the adjuster tubes. Some guys use 1/8 lt ply for the complete rib and then make lightening holes.

Wayne G.