So I finally went beyond my need of 8 feeds on my HD dish so decided to follow the guide to use 2 WB68's. I took in the 4 feeds, split each and ran to 2 diff WB68's, in the correct order (dbl checked that). Hooked up some of my rec's to one wb68 and others to the 2nd wb68. Not really paying attention to the fact that one rec may feed off 2 diff wb68's. Not sure if that matters or not.. All seemed to be well.. Last night I turned on my bedroom receiver and noticed the 771 error on tuner 2. It was trying to record a show on channel 277. Changed the channel and the error went away. Then I tried another channel in that area think it was TLCHD, got the same 771 error. Went out to the living room and checked it on that receiver (which was my first HD box) and it worked. Went back to the bedroom and it was now not working in there.. Hmmmmm. Now if I changed the channel on the living room box to something out of that range the bedroom went back to 771 error. This morning I went down and out all the feeds back into the older WB68 except one, left all the splitters and it seems to be working now. Bad WB68? Or is this configuration prone to problems like that? Since it is powered by the receivers are they driving the switches to diff voltages and causing problems? Thanks for any advice.. Probably should have just bit the bullet and got the SWM16..