Load balancing 3XWAN

Hello

I sit with a big problem that I can not solve right now.
I’ve tried to do a load balancing with 3 X wan, and 1 x lan.

Where all my PCs on my LAN can share the 3 x wan connections. But this fails me.

I’m getting a little busy trying to get it to work, so if anyone could help me with this.

I’ve made a little drawing of how it is set up. If this can help someone.
LAN.pdf (65 KB)

Deleted because not related.

Have you read this?

http://wiki.mikrotik.com/wiki/ECMP_load_balancing_with_masquerade