RE: Help with throttle servo setup
there are two ways of doing this.
First way
Oppen the throttle stick and trim to full on your transmitter and on the engine untill the barrel is fully open connect the wire to the servo and throttle on the engine. Then pull the throttle back on yor transmitter with the throttle trim to the top. You should have about 1 mm of a gap showing where the barel is. This way you should be able to fully close the barel with the trim and throttle fully down which will stop the engine.
second way
close the throttle and trim to idle and the barrel closed connect it all up and you should be able to oppen it to full throttle