Part x351 (41850) - Body, Racers Driver

[Travis Cobbs]

Finding surfaces to subfile is always good, but dividing flat quads into 2 symetrical halves is never good practice.
Here is an example of useless vertices that should be avoided.



Try to remove these surfaces from the subfile, and then add them in the top level as full quads, spanning from left to right side.

Actually, those vertices may be there avoid t-junctions where the base meets the top. (I can't tell for sure if this is true.) There is certainly reasonable debate about how much effort should go into avoiding t-junctions, but saying that they are useless is wrong if they do indeed prevent t-junctions.