Composite grids in 2nd level nesting?

[Renato_Cecilio]

Hello.

I am trying a configuration with two composite grids in the second layer nesting (GridsInLayer = 1 2).
However, I just managed to make the contacts file with Ncontact=6. How else would grids 2 and 3 communicate between them?
But this breaks the (Ngrids-1)*2 rule and the model doesn't run.
(In a desperate attempt, I tried to force Ncontact value in set_contact.F. The model runs, but out of sync among the 3 grids and blows up fast).

Any ideas? Is this even possible?

Renato Cecilio