I have a DLE35 plus a few guys at the field have the same motor with similar behavior. We both discovered that lean the high needle then rich till 200 rmp drops . Lean the low till throttle transition is good. Do this two additional times and all the issues went away. We also both purchased the Tach from Hobbyking to assist with the adjustment. It was driving me crazy at first till I did the procedure as described. Good luck and hope it helps resolve your issue.