OpenVPN multi-sites access all Lans

[vicktorus]

Hi guys,
i have setup an OpenVPN multi-site between 3 offices. Really easy to do with PFsense.

Now i try to have 2 of my LAN connected together. I mean, all computers can see each others trough VPN:

PFSENSE-A = OpenVPN Server
PFSENSE-B and PFSENSE-C = OpenVPN Client

Blue arrows = Ping or Telnet working
Red arrows = Ping or Telnet NOT working . (this is what i try to solve)

1. All PFSense servers can see any computers on any LANs.
2. All Computers on LAN 192.168.66.xx can see any computers on any LANs.
3. Computers on LAN 192.168.11.X can see all computers (including PFsense A) on LAN 192.168.66.xx
4. Computers on LAN 192.168.10.X can see all computers (including PFsense A) on LAN 192.168.66.xx

Like i said, the only thing that doesn't work is computers on LAN 10.xx to see computers on LAN 11.xx (vice-versa).

All computers behind the PFSenses are using XX.1 as gateway.

PrintScreen of my OpenVPN Server Tunnel Setting :

PrintScreen of my both OpenVPN Clients Tunnel Setting:

Acualy, i have configured another Site-to-Site between 10.XX and 11.XX. It will be more "clean" if it could work through Multi-Sites.

Thank's