Hey,
I run my GTB at the factory setting too but couldnt make head nor tale of the instructions so didnt know how to turn the drag brake down/off ect. The spektrum DX3.0 doesnt actually have a throttle curve setting, but it seems pretty linear now, no burst/loss of power through the trigger movement.
TBH, my car os even quicker down the straights than the 3.5, he hasnt figured out how to use full throttle and keep it in a straight line yet
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Canon 40D (350D backup) - EF-S 18-55 - EF-S 17-85 - EF 100-300 - EF 50 - Canon 430 EX || Speedlite - Canon BG-E2N Grip
Adobe Photoshop CS4 Extended
AX-10 Crawler - Thats all I have left!!!