I have on thing to say about the failsafe and that is that i don't think that it is necesary. Because wehn i turn off my radio the reciever simply stops working and the engine goes to an idle. I have no failsafe, all i did was put a heavier spring on the throttle. The same thing happens when i pull out my crystals in my radio or recievr. There's a few bucks back in my pocket.:nutshot: