Ok one last update and its a strange one, lol.....when I was looking at my list of wifi connections I noticed that somehow the 5ghz guest had somehow been enabled.....I logged into my router's setting and sure enough it was enabled .... I disabled that and turned off DMZ and Tivo's are back to working fine......wow what an adventure this has been, lol........what do you think would cause these problems?......what happened was whenever the tech support had me clone my mac and power cycle everything it lost some of my configurations and I had to reconfigure some things such as the router's password, log back into share port and evidently it also enabled the guest zone..........I am hoping all of this stays fixed this time......its a great router when everything is working........so for now I guess the high quality updated splitter did indeed fix the problem I was having with the Tivo system but if all else fails enabling DMZ will fix it.......but I feel better than I don't have to keep that enabled.........James