Phased Array Antenna Integration Problem

I've successfully simulated array of 4 elements at 5.2 GHz, Wilkinson Power Divider, and Hybrid Coupler for phase shift purpose.

I've changed capacitance at port 2 and port 3 of Hybrid coupler and got the desired angle shift.

When i attach Hybrid Coupler and Array antennas then beam steers according to desire.
but when i attached Power Divider with above arrangement , my pattern disturbs drastically.

Could anyone help me what changes i should do in order to have pattern perfect?

I'M USING CST MICROWAVE STUDIO SOFTWARE