jr service
It's always better to give a little background information before making negative statements about a product or it's support. Your warranty states very plainly that it covers "materials and workmanship". Now, if you send in a box full of servos that have been in a crash, you are going to have to expect to talk to someone in a calm manner and convince them the problem is with the product, not the installation. It sounds to me like you need to get on the phone and escalate your way up the ladder until you find someone who can, and will, take care of you. I think if we were to take a poll, you would find there is at least one person on this forum with a similar story to tell about every manufacturer out there. I personally have had problems with both JR and Futaba servos, and in both cases, they were resolved to my satisfaction only after being told initially there was nothing wrong with them. A couple of phone calls later and I had replacement servos on their way to me.
John