It sounds like the antenna in the RX is broken or not securely attached to the RX. I know this sounds like a generic answer but, if this is a new setup you might want to return it to CEN for repairs.
I suggest using the JR radio and putting the CEN radio on the shelf until they offer the radio swap program again. Providing that they are using the Airtronics radio's for the swap. The Skyion from what I have been hearing isn't much better than the Impacts as far as reliability and dependabiliy and on a 70+mph car you really need dependability.
You can order a new synth RX for the JR for $65.00
http://www.jrradios.com/Products/Def...dID=JRPRS30075
rolland