what car are you driving to be going through the 7940's so fast? i bought me a 7940 and a 7950 both 3 days after they were released and have not had a problem with either one yet. i ran the in my mbx6 for about 3 months and have been running them in my xray 808 ever since then. i love the servos. oh and i have been running them on direct lipo as well from day one