Homer_J and rhovsquared,
I read you both loud and clear.
Homer_J,
This thread may be barking up the wrong tree
It's not, if your experience is true and anything to go by.
I hope there will be some more informed comments, without doggy jokes.
rhovsquared,
I agree with your description about scanning. But I think what Homer_J is saying, "I'm seeing what I think I should be seeing, so it's OK", while it isn't.