Hi Everyone. I have three slinboxes at home connected to three different cable boxes. I have Verizon Fios service. I have two M1s, and one 500 sling box. When I change the channel through one sling box ( it doesn't matter which one), the channel changes on the other two. It's like I'm controlling all the boxes through one sling box. Does anybody know why this happens and maybe have a solution? Thanks.