This is making me crazy! I have 3 TiVos premiers, 2 are XL. So we're all on the same page- I refer to them as TiVo #1,#2 and #3. #1 is an XL, #2 is not XL and #3 is XL. Tivo# 3 (the second XL) was a replacement for a series 3 XL that wouldn't boot. TiVos #1 and #2 are working fine but #3 is having issues. The symptoms- macroblocking, stuttering and some channels won't tune. I have Verizon Fios (near Annapolis, MD). I have 1 coax line going into a 3 way splitter that feeds all 3 boxes. #1 and #2 both show signal strength in the 90s, #3 shows low 30s. If I pull the coax feeds from #1 or #2 and connect to #3 there's no difference. If I take the splitter out of the equation and connect the main coax feed to #1 or #2 I still have signal strength in the 90s. When I connect the main feed to #3 signal strength is in the 60s but it works fine. #3 shows lower signal strength no matter what I do. I really don't want to think that #3 is defective. It's probably a refurb as it was shipped from TiVo as a warranty replacement. I hooked it up for the first time today. What could be causing this? Any tips for fixing it?