rules to allow trafic to multiple wans

[arkoulikosta]

Hello Community.
first time using pfsense and i run into an issue. probably something lame....
my setup...
wan1: 192.168.1.0/24
wan2: 192.168.3.0/24
lan: 192.168.2.0/24

i have a gw balancer between wangw1 (192.168.1.1) and wangw2 (192.168.3.1)
my lan gw is the pfsense with ip 192.168.2.1

The load balancing works and when the wangw1 is selected i can access its interface (1.1).
when the fail over occurs the gw changes to wangw2 and i can access its interface (3.1)

how can i have access to the secondary gateway when it is not selected?
i tried static routing but since the sub net is on a wan interface i am not allowed to do so.

i believe i should add a rule, but i an not sure in which interface and with what options.

thank you!!