Load balancing is not working, newbe needed help.

Hello there gys, here is my export script.
Please tell me where did i do wrong.

/ip pool
add name=dhcp_pool1 ranges=10.10.1.2-10.10.1.254
/ip dhcp-server
add address-pool=dhcp_pool1 interface=ether4 name=dhcp1 relay=10.10.1.1
/ip address
add address=10.13.67.135/25 interface=ether1 network=10.13.67.128
add address=192.168.2.109/24 interface=wlan1 network=192.168.2.0
add address=10.10.1.1 interface=ether4 network=255.255.255.0
/ip dhcp-client
add dhcp-options=hostname,clientid interface=wlan1
/ip dhcp-server network
add address=10.10.1.0/24 gateway=10.10.1.1
/ip firewall mangle
add action=mark-connection chain=input in-interface=wlan1 \
    new-connection-mark=WAN1_conn
add action=mark-connection chain=input in-interface=ether1 \
    new-connection-mark=WAN2_conn
add action=mark-routing chain=output connection-mark=WAN1_conn \
    new-routing-mark=to_WAN1
add action=mark-routing chain=output connection-mark=WAN2_conn \
    new-routing-mark=to_WAN2
add chain=prerouting dst-address=192.168.2.0/24 in-interface=ether4
add chain=prerouting dst-address=10.13.67.0/24 in-interface=ether4
add action=mark-connection chain=prerouting dst-address-type=!local \
    in-interface=ether4 new-connection-mark=WAN1_conn \
    per-connection-classifier=both-addresses-and-ports:2/0
add action=mark-connection chain=prerouting dst-address-type=!local \
    in-interface=ether4 new-connection-mark=WAN2_conn \
    per-connection-classifier=both-addresses-and-ports:2/1
add action=mark-routing chain=prerouting connection-mark=WAN1_conn \
    in-interface=ether4 new-routing-mark=to_WAN1
add action=mark-routing chain=prerouting connection-mark=WAN2_conn \
    in-interface=ether4 new-routing-mark=to_WAN2
/ip firewall nat
add action=masquerade chain=srcnat out-interface=wlan1
add action=masquerade chain=srcnat out-interface=ether1
/ip route
add check-gateway=ping distance=1 gateway=192.168.2.1 routing-mark=to_WAN1
add check-gateway=ping distance=1 gateway=10.13.67.129 routing-mark=to_WAN2
add check-gateway=ping distance=1 gateway=192.168.2.1
add check-gateway=ping distance=2 gateway=10.13.67.129