I haven't had very good luck with my Hong Kong hoe (distributed by rc4wd), electronics & hyds problems right from the start. Mine just completely quit a few months ago, I've determined that one or two servos on the valves is shorting out the receviver. And the direct drive pump needs a transmission reduction for the motor to operate at a more efficient rpm I intend to replace everything this winter.
This guy from Ontario, Canada got a later production, his seemed to work pretty good out of the box, but we haven't heard from him in a while.
http://www.rctruckandconstruction.co...ead.php?t=3697
Check out this hoe.
http://www.vario-earthmovers.com/mod...deere-850.html
It's the biggest track hoe kit on the market and is priced very reasonable. The only real downside is that it's +35kg, a bit of a bear to pack around by yourself. But a very powerful model to dig hard ground. I've used it to dig approx 7cu m of heavy clay this past winter.
Welcome to the forum.