I'm new to this but I bought my truggy a couple of weeks ago got told by the shop everything was set up and found out to my horror I was lied to as last Sunday my truggy reciever battery got low and the truggy proceeded to race off , but it's got a buit in failsafe I thought well yes it has but It wasn't set up . Well luckily it didn't hurt anyone and also it was stopped before it was damaged . I have since set up the failsafe and checked by switching the radio off that it works but how do you check the reciever failing will activate it tried switching power off but nothing happens please help as am worried about using the truggy now