Screws vibrating out

I have a 2009 Landmark Augusta. After returning from a 2 month, 6400 mile trip, I noticed the screws/covering holding the front panel on by the kingpin were backing off. Iam NOT sure if I have a MAJOR problem or if the screws just vibrated loose. I also noticed that the screws are RUSTY except where they were into the aluminum structure. This DID concern me. Any suggests/help? The panel Iam referring to is the one running from the front(forward facing) compartment to the front cap.

vibration

Have you had the tires balanced? Our first trip to Texas, the nuts on the toilet seat vibrated off and layed on the floor. I reapplied them good and tight. On the way home, one of then nuts had vibrated off and the other was loose. I guessed the only source was tires out of balance. Note: We did not feel the vibration in our pick up. Tires took 8 to 12 oz to get in balance. Too much. I now have Good year tires. I will never take another unit without balancing the tires. Check it out.

I have had a couple that were loose. Put a small amount of clear silicone adhesive/sealant on them and tightened them by hand. Are all your bolts securing the king pin tight? I check the torque on them but we haven't got that many miles on ours yet.