routing over ipsec tunnel

[IanT]

Hi Guys,
I'm new to pfsense need some help with static routing. I have 2 sites linked via IPsec tunnel . Site A is the pfSense and site B is a Draytek router , the draytek has 2 wan ports one is connected to the ISP, the other is connected to the clients network , which is part of an MPLS network . Before installing the pfSense site A also had a Draytek router.
Site A has LAN subnet of 192.168.22.0/24 , the router at site B has a LAN subnet of 172.16.10.0/24 . The second WAN port on the router at site B is connected to the clients network and picks up an address in the 10.192.44.0/24 subnet via dhcp .
When it was setup with 2 Draytek routers I could reach any active IP in the 10.192.0.0/16 range. This was achieved via static routing .
I can ping any device in the 172.16.10.0/24 range I just can't get beyond that point. When I traceroute to a 10.192.44.0
the packets are going straight out on the WAN at site A
I am struggling to emulate this with pfSense , so any help would be gratefully appreciated .