I have never had a puppy bite that ended up different than what was seen at 8 wks. (surprised others have) I would pass.

I have had perfect correct bites at 8 weeks only to have them go off when all the adult teeth have come in. I have an adult who had a level bite, ( was made up with that bite as well) now at the age of 4 his bite is back to a scissor bite, I have had correct bite apart from one misplaced tooth so no go for showing, I am inclined to think people who state they have never produced a bad bite have not check all their puppies as adults which is difficult to do when puppies go all over the country and most pet buyers would not know they dogs bite was incorrect.