well i went to the hobby shop and warrantied the hitec hs-645mg and paid $20 for the hs-5645mg...i only had $20 so i hope this will work!...the 645 had 133 oz of torque and the 5645 has 168!...i was going to get a nice airtronics for the same price but hitec is the only company that allows shops to exchange bad servos on the spot!...so i went with the hitec till it blows and then i will just keep warranting it till i get $50 more to get a 7955tg!