RE: Using a Y-harness with digital servos??
ME to ,Y harrness is ok never a big deal. Take the time ,learn how to program your radio without the Y, keep in mind the y was made for use when using a low end radio, programing is the way to go , dial it in.
I used y's all the time because I did'nt want deal with the programing part, and I have the radio, just did'nt want complicate things, once you do it your gona be much happier. You have to be carful with the reversing Y's it's easy to exceed the limt and your surface will not hold under load, if you are planing to use 3D rates, program your radio or keep the rates just a bit lower.
Just my opinon
Dave