I bought a 8500 X50 on craigslist the other day and it seems to work great, no issue's thus far. However, I had a Bel V940 that was one problem after enough after it's first year. So this time around I decided to play it safe and purchase the 2 year extended service plan that escort offers for $30. I was wondering if anyone else has done the same and if they ran into any issue's if they ever needed to have their escort serviced while under warranty? Also, I was told to expect an envelope with some information and a sticker to place on the RD to arrive in the mail in a few days. What exactly is in there?