Front bumper guard cover caps

Not a very flush fit Bobby. They look to have distorted in all this sun we're having.
May be worth gently heating them with a hairdyer and re-shaping them a bit.
If that works, a couple of carefully placed blobs of clear or black mastic on the back where it will be hidden and then tape them in place 'til mastic sets. That way, so long as there's not too much mastic, they can be pulled off should the need arise.