Maidened my FT Delta today. It flew fairly well with 60% throws and expo @ 30. I cut the flight short though after noticing that it took almost full throttle to maintain altitude and could only get meager rate of climb at full throttle. Is this to be expected ? I'm considering an upgrade to an 8x6 prop, E-Max XA2212 1400KV & 20 Amp ESC. It seems the Delta could be a good windy day plane if properly powered.