I recently hooked up a 15db Motorolla Signal Amp that I purchased on Amazon in order to fix ongoing pixelation issues on my Tivo XL. In the first 2 days since installing the signal amp, the cablecard has unbinded from the tivo several times. Am I doing something wrong...the signal amp is bi-directional, so if the cablecard should be able to talk to cablevision no problem. Could the amp be too powerful? I called cablevision (didn't tell them about the amp) and they rebinded it no problem Anyone have any advice?