OK guys, Save my R/C life for me before I throw the whole thing in the trash can!!! We all know what luck I have with servos!!! So here goes...When the season 1st started I was having what I thought were glitching problems....My throttle servo would go all screwy then come back to normal...Keep in mind I buy new servos pretty much every other day!So I definately do not have "old and worn out" servos. So I was running a Hitec HS645MG with my spektrum. I switched receivers thinking that was the problem...Nope! Finally the servo gave up on life and quit working altogether. So I buy yet another one and life is good...up till today. Then out of nowhere it craps out on me. So I go home swap it out with yet another new one...Go back out and get maybe 15 minutes of run time and this time it quits working..So I pick up the truck carry it to my workbench and start looking things over. I had just charged the batterys so that couldnt have been my problem, I flipped the switch to the off position on my radio to see if the failsafe would kick in...It did NOT. So I turn the radio back on and whammo all of a sudden the servo does a 180 degree spin, rips my throttle linkage completely off the motor and seizes up!!! *** is going on!!! When I got back home just for the heck of it, I turned the radio system back on just to see what it would do....Before I turned it on I spun the servo back to the position it should be in and then turned the radio on and the servo just did another 180 and spun itself backwards again and would not budge for anything!!! My end points are as follows!!! Throttle is sitting at 100 out of a possible 125 and the brake is set at 40 out of a possible 125!!! So it is definately not OVERWORKING the servo. So in an hour of running it has now cost me $130 in servos!!! I am P.O'd big time!!! Can someone please tell me what the hell is going on!!! I use a spektrum radio system, have a 5 cell hump pack and Team Orion rechargeables in the radio itself.
Sorry for the long post guys but I am just trying to explain what all has happened and really need your help.
Thanks.

I have just install a spektrum receiver on one of my new rc truck and it was doing all kind stupid things I had to redo the binding process and now it work good and a couple of times i had the wrong model set on my TX. Hope you can sort it out before you go thought more servo it's kind of expensive.

you have a second RX right? what i would do is take your spare servos and RX and bat packs and test it out of the Car there could be some pinching of either a cable some where in the car causing it to glicth and cause the probs with the servos being mangled