I have a question and would like to hear peoples opinions. I just always figured when you did solid models you would build them like in the real world. Mate surface to surface. Hole to hole. In our product dept. they mate to planes. Just seems like I see more problems with there models mating to planes. More interferance. But, they say when they replace parts in different assemblies they can control this better. Otherwise they lost mates with the new parts. I would like to hear other people take on this please. If the plane mate is wrong maybe we can find a solution to there problem. Or maybe they are right.