[BrianG]

Originally Posted by spaz163

If you are using two packs maybe it is hooked up incorrectly, such as stated in this pic pulled from Castles website...

http://www.castlecreations.com/products/cc_bec.html#

That's only if running more than 6s total voltage. If 6s or under, hooking across both packs is fine (and recommended to prevent over-discharge on one pack).

rcjmaxx, you said you were using a Rx pack. Did you have the red wire removed in the throttle cable (to disable the ESC BEC)? Also, what exactly is glitching? The steering, the throttle? Like others have said, try moving the UBEC away from the antenna wire. Depending on the radio being used (AM/FM/Digital), the small amount of noise emitted from the BEC could cause issues.