I bought this and I find the Blackwing BW 635RG imposible to fly. I can't set the trim easily and find it imposible to maintain level flight,sometimes there seems to be a lack of power? As for the autopilot, sometimes it works for a minute then it decides to change all settings and it all goes haywire. Other times it doesn't work at all. I have been able to set and maintain an altitude for a few minutes but never a flight plan or heading? After wasteing hours of my time I give up. Lesson learned, don't purchase new aircraft until they have been out for a time and any know glitches are well known :-)
