If finances allow, and you think you are going to stick with RC, it might be time for a Dx6, 7 or 8.

In addition to rebinding you also have to retrim, and may have to reverse channels.

If you are using Dsm2 receivers and money is tight, you might be able to find a good used unit for a good price.

If you have DSMX receivers, there probably aren't many DSMX transmitters on the used market, as they are fairly new.