Hey im a fairly new TIVO cable cutter and I have noticed the TIVO Roamio OTA has some issues. One is the internal cool air fan being very noisy typically a few months after you first start to use it. Many suggest its from a lack of bearing lubrication. So as I can see on youtube there are several videos how to replace the fan and I was wondering how many replaced the fan and what your results are like. Can you recommend a current fan available to purchase? If you lubed up the bearings what was the procedure and how did it work out longterm? Does anyone mod their unit?