To All V120D02S Owners!!
Out of the box my V120 had a twitching rudder servo that was getting worse only after 10 flights, DO YOURSELF A FAVOR and buy a E-flight DS35 servo, all you need to do is flip the servo holder to face the other side, solder on a lead wire from a shot servo, wire black to brown, red to red and white to orange and sand the little servo prongs untill they fit the tray.
the tail holds great, talks to the RX just fine, and is smoother and faster and only costs you $17
Another thing to do if you are doing mostly 3D, install microheli blades, they are thinner and lighter, they work great to make flips much faster, but be warned they are more likely to break in a crash and it will make it much less stable in fast flight (i'm talking when your flying it as fast as it will go)
order swash servo gears from oomodel, these are said to be much better than stock, servo's are walkera's ackiles heel
cut the tail fin so that the landing gear sits flush (mine was WAY too tall) and shave the back of the fin off, I found this makes the tail hold better
for a tame but controllable bird to learn with, set your dual rate to 75% (keep rudder 100% always)
one last thing, melt the canopy where it meets the landing gear so its a oval instead of a square, canopies always crack here due to that sharp edge tearing/cracking, doing this will prevent it from cracking here.
This is a great little bird and is leaps and bounds better than a micro like the Genius cp or Nano CP it flies like a much bigger bird and has a perfect balance of stability and agility.