Seriously Eric - it's not just me telling you this time.
Pull it down again or you are going to kill the cam and lifters. There's almost certainly no warranty comeback on it either - since by your own admission:

For the sake of a $30 head gasket, do this bit again and get it right.I don't remember us putting anything on the cam lobes. I do know that we soaked the lifters in oil for a week before installing them, and there was plenty of motor oil on them when they went in. I will call the machine shop today and see if they put anything on the cam.