Bluebird is constantly updating their servo's, I just got finished testing a few of the new ones from my sponsor and the are the best yet. It's true that at first there were some centering problems but they are well past that now. I used two in my nitro TC for several weeks and they worked flawlessly. For the price you really can't beat them, click on the slickzero link in my Signature, they carry bluebirds at a good price and the best shipping price in the industry
