[Freeswitch-users] Bridge app and SIP 503

Hi all, I'm using a failover bridge string with several gateways. <action application="bridge" data="sofia/gateway/primary/dialstring|sofia/gateway/secondary/dialstring"/> One of the gateways responded to a mis-dialed number with a "503 Service Unavailable" instead of a "484 Address Incomplete" My FreeSWITCH servers are behind a load-balancer, and what is happening is the bridge app is passing that 503 back to the load-balancer which then marks that gateway as down. I can't remove the 503 detection from the load balancer, because that's how I disable a gateway from within freeswitch (fsctl pause, which sends 503). Does anyone have any recommendations on how to address this issue? Thanks!