Problem with particles (path)

So I am making this carpet but there is less (green area) and area with lot of particles(red area). I have vertex group to make it only on top and set even distribution. Please help

Looks like Solidify modifier is hiding something. Revers its Offset…
Otherwise simply post your scene/test file & a reference/sketch/photo of what you want to achieve.

carpet.blend (2.0 MB)
here is that blender file