When I say "send it in". I mean send it to Hobby Services. They will check it tune it and do a vibration test on it. Might cost you $20 but it may save a plane. I would buy the same channel just so you can use the RX you have. Another thing about the channel is where do you fly? If you fly in a larger club see if they have a list of FREQ for their members. If a bunch of guys have your same channel then pick a different channel. Then when you send the old RX in have it changed to your new channel. The crystal will cost you about $10 but the rest of the price for service will be the same. I had an old one I sent in that had been crashed. They called and said it had many problems but they would trade me for a new RX with crystal for $40. Thats a $75 value for $40.

David