Ijust updated my tail servo to an EXI Digital servo http://www.xheli.com/exi-servo-d213f.html
. Andy described the process. Just a noob point...I mounted mine 180 degrees from they way it came from the factory. So Ireversed the direction on the gyro and transmitter if Iremember correctly.Then afterwards Ifigured out what Idid.:-) Take note on how the factory one is mounted and you'll be fine. Don't forget to flip the switch on the gyro to DS now that it's a digital servo.
For what it's worth, I noticed a "touch" of tail wag with the new digital servo.Iguess it's just a bit quicker to respond than the original so it acts just slightly different.I turned down the sensitivity a bit on the gyro to compensate.Didn't have to adjust it, but I didn't like the slight wag/twitch the tail exhibited.