UNBELIEVABLY but True

Any of you who have tried to help me over the last fews days won't believe this. After taking the carb off this morning I found my 16 year old, who we are restoring this car for and was helping me, I found when he put the carb on the base plate he placed another gasket on top of it blocking the suction to the pvc. Thus causing the blowby to occur.
Thank you for the patience you have give me in this endevor. This is suppose to help parents and their children grow closer together so I don't think I'll tell him.What do you think?
Thanks again
Tommy