I have 2 gassers both with identical setups..5 8611's 1 811 and 1 3004..both setup with 7ch Futaba PPM RX and 9C TX..engine on is 95-100' before a minor glitch..With my 9ch PCM RX I stopped walking at 500'...I have over 150 flights and the only time I got a glitch was when my landing gear lock nuts loosend up and starting vibrating on the aluminium plate..I put lock washers under them with some blue loctite and havent had a problem since..