aircowboy,

I am surprised that nobody mentioned the fact that you should not change the crystal in the transmitter. Here's some info right from Tower's website:

*Transmitter Crystals Can Not be changed to another channel except
by a licensed service center. It is against FCC regulations, and
illegal for the user to change a frequency determining component
of a transmitter. If the radio is not retuned, it can be a hazard
spectators, modelers or property, and void AMA insurance coverage.
*Check with the local R/C club for the frequencies used in your area