poison,

I think the 3 in 1 board is also different. The v3 has a built in lipo protection module.

I'm a big fan of the geared tail. You may find your tail motor on the v3 gets very hot & it
may fail after just a few flights due to the direct drive.

I'd consider remounting the tail motor with an Align boom mount servo bracket. You
can use direct drive even with the geared tail bracket.I've posted some pics a few pages
back showing the bracket with a geared tail.

There are quite a number of things you can do to make the Axe a reliable flyer, but
one I strongly suggest is to smear a layer of household glue over the tail motor wires,
capacitor wires and terminals so that the metal terminals are held firmly in place by
the glue. If you don't, the wires and capacitor will vibrate the terminals and, along with
heat which softens the plastic, the terminals will come loose, which allows the brushes
to get loose, and end of tail motor.

Happy flying!
JEM</p>