I guess my question would be what do you mean by "see it"? Do you mean the texture of the filled area is different? Do you mean you can see the edge of the filler around the filled area? Do you mean the primer didn't stick and you can see the actual filler? All are different problems with different fixes.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.