Detail sprites not lining up

[dhog10]

So i'm using the urban_grass_overgrown detail sprite vbsp config from l4d, which corresponds to the detail/detailsprites_overgrown

I have set that up in my map parameters, and added it to my material vmt files, but when i look at them ingame they are not lined up properly at all and look like this:

[IMG]https://i.gyazo.com/ff6eea89bae59da7a1c48dc22bfab6e0.jpg[/IMG]
[IMG]https://i.gyazo.com/25b96ddf191845f5bbe5b43494494455.jpg[/IMG]
Please help