DA100-Ran perfect until today-went rough midflight
DA100 on my 35% aeroworks has always run great and today was no exception until the last flight. I had taken off and was at about 90% throttle, all of a sudden, it started running really rough and lost power, almost like it was on one cylinder. When I dropped the throttle, I had enough power to land and it smoothed out. Got it back on the ground and running it up anything abov about 1/3 throttle, it would cut out and run rough, anything 1/3 throttle and below smoothes out.
Could this be the ignition or a plug going bad?
If anyone can give me an idea what to check before I send this thing back to DA, I would appreciate it.
Thanks