my rc car will not respond 30ft away. it did before what are some reasons and how can i fix this?</p>

You can't fix it. You either need to send the transmitter and Reciever in to redcat and get it warrentied or you need to buy a new radio system.

the entire electrical system or just the crystals are we talkinthe entire servo system

Before you do that make sure you are using new batteries and that all are seated tight.

try new batteries and also make sure the crystalls are in tight.....if that doesnt work (most likely wont) send the transmitter and reciever to redcat...Darin will take care of ya on radio issues