I would never run any of my trucks without loctite - especially on the engine mount screws and set screws. It most certainly is true. I've never before met anyone that didn't use loctite (I have met MANY racers - our local series races get around 100-150 racers each event). And in the 3 years I have been reading posts on this forum you are the very first person I have seen post that one does not need loctite . I am glad it works for you, but it shouldn't be reccomended to anyone else.

When you use loctite, make sure you use the blue stuff. Red is too much for most R/C applications. If you have a problem removing a screw with loctite on it, heat it up with a lighter or hobby torch. Loctite breaks down at 300 degrees F.