problem with the design of a butler matrix 4x4

hello!

i'm trying to design a nutler matrix at 10GHz using this architecture Attachment 130547

i've designed the 3dB coupler and the crossover, here are the results of the simulations:
for the coupler: (port 4 is the isolated port)
Attachment 130548
for the crossover:

my problem is when i gather the components i get weird results and i don't understand why. here is the layout:

normally i'm supposed to have -3dB at port 2 and 3 and a good isolation on the ports 5 and 4, instead i get this :

thank you in andvance.