well took it out for its maiden and no good.the cmpro yak is way too tail heavy and struggled to even get it down safely.we adden 750 grms to the front and another battery pack to the front for weight and still no good.second time up with all the extra weight increased the wing loading and it went in on landing.verry minor damage to the yak and broke the engine mount lugs off but thats it.got out of it verry lightly for what was hapening.plane is goin to a new home when i get around to advertising it.the motor ran sweeeeeeeeeeet,verry impressed with the power this thing has.its goin in a 25% extra 330 l next and should preforme alot better.as they say $h%t happens so will try again