Bill,

I notice that your build shows no evidence of primer, and only a couple spots of what I think is filler. Is this because you sanded all the primer away because you didn't have any high/low spots? (Note that if that's the case, I'm going to throw myself in front of a bus. My stab is gray all around, and likely to get worse now that I've sanded out all the cracks in the primer and starting over.)

Cheers,
Richard