I heard from a few, that the "bad boy top of the line" JR servos are the way to go with the Losi 1.0. I fed my Losi 5 servos over 5 months, so I'm probably going to say don't use Hitec TG series servos for throttle. LOL!
I laugh now but back then OMG I was tilted...
Try the JR...
...and yes I had a team Losi driver set up my linkage, lasted one night.