Intermittent front end banging on the left side

After driving about 300 miles the banging noise is back. This is really discouraging after spending $330 on the front end. I figured they had to drop the lower A arm to reseat the coil spring but I don't see any evidence of that.The grease is still in place around the nuts. So far this trip it started with the front end noise,then the WH went out now I can't get my generator to idle correctly. These things are easier to fix when home than on the road.