I can't get the V-Ray grass to all point upward

[rich_cliften]

I have been having this problem for a while but normally I have used a more simple flat terrain where I can just invert the gravity and make it all point upwards. But in this model the terrain is more geometrical and has more faces and it is rendering the fur on either the top or the bottom making the lawn look extremely patchy. I don't know why it has some grass point down and some point up but any help would be greatly appreciated in making all of the grass uniform in pointing up.

Also I realize that I could delete all of the grass and draw it with less faces but I don't want to do that so if there is a way to fix it please let me know.

[fixeighted]

You must have some faces that are flipped, so have a look and at those that make the grass grow downwards and flip those