A few years ago, I re-anchored the lag screws holding in the awning arms. I removed the loose screws -- one at a time!! -- and then filled the holes with JB Weld, which is a two part epoxy.
If you take all of the screws out at the same time, the awning arm won't stay in place.
If I remember correctly (it has been a few years), I used a wooden chopstick to jam the epoxy into the hole.
I then re-inserted the lag screw.
The trick with JB Weld is to work fast -- it sets up quickly. Mix only as much as you need at any one time. And spread newspapers on your driveway in case the epoxy drips -- it is very hard to get the stain out of the concrete. Don't ask how I learned this.
One more tip -- use masking tape around the holes in case the epoxy smears during installation -- it will stain the side of your trailer.
2012 Fun Finder X-139 "Boondock Style" (axle-flipped and extra insulation)
2013 Toyota Tacoma Off-Road (semi-beefy tires and components)