Monster Hunter Portable 3rd (HD Ver. or not)

[Ranger2415]

So i've been trying to player MH with my two brothers since I got this emulator and we've had no luck. One of my brothers I can play with but the other I can not, he can see him, but the other brother can not see me. So basically, i'm brother 2, I can see brother 1, but brother 3 can not see me, the weird thing is brother 3 sees brother 1 and can play with him. We are just not able to play all at once. The next weird thing is that we have a friend who lives across the pond and he's been able to play with brothers 1 and 3, any ideas here? We've followed most guides and tried many things with Hamachi, I think it has something to do with our computers but at this point we're stumped. Any and all ideas are grateful!