RE: 240 or 401
401 , 401 , 401 !! dude they are choice , servos grab a hds-577 ive got one on my tail with my 401 , around 30$ us
[link=http://www.wattsuprc.com.au/product_detail.asp?pid=TADS02]hds - 577 digital servo[/link]
switch the gyro to high frame rate mode (digital) set the centre point , gain at 70% Tail lock and forget your tail !!!
also you cant use a JR digital on a 401 either wrong signal timing ..
LOL's
Toooo Easy .
Jason