ive got an xp3ss that will bind just fine to the receiver however its antenna is broken so it has a range of 1-10 feet. have the xp2g but it wont bind to the receiver. they both just flash red and green until i turn both off. what should i do?

As per AE, "Your XP2G/XP3G transmitter is compatible with both TRS402SSi and TRS403SSi receivers. It is not compatible with the TRS401SSi receiver. "
Sounds like a good time to upgrade.