The LNB is the actual "eye" on the end of the dish's arm. LNB Drift does not mean that your dish is drifting left to right. It means that the LNB's electronics are fried. It is a simple matter to replace the LNB on the end of the dish arm. Call Dish Network and report the problem. They will send you an LNB. (for free if you have the protection plan--for a nominal fee if you dont)
See ya
Tony
See ya
Tony