I have a 6100, 3100, and 2700 hooked up through the heat sink multiswitch sw44 with the inserter on output 1. I just added a 6000 to the multiswitch and all receivers are fine except occationally the 6100 loses the info in the guide display. When I hit guide, the picture is black and all stations say no info. A bar goes across the screen while it loads the guide again which sometimes takes several try's. Sometimes it wont work at all and I have to do a switch check to get it going. I dont have this problem when I take the 6000 receiver off the multiswitch. Does anyone know if this multiswitch can accept more than 1 high def receiver?