GHPT Problem with trimming a grid on a surface

Hi PT Group!

I have a problem when creating a grid from a surface and trimming the grid.

While my solution works fine for all the other surfaces in my project, this one is giving me a headache..

I'm attaching some screenshots which will help me explain the problem and the surface itself.

In step 1, the grid works just fine.

In step 2, when I try to trim the grid,  it's missing two points (red circles).

If I graft the ptTrim component Gd input, I get a proper result with two missing panels (bottom screen shot)

In step 3, when I try to move/offset the trimmed grid it seems like it doesn't understand in which direction to move the grid.

Please help?