Yep, send it in, you have no idea how many times previous owner dropped it. They will give it a good look over and cycle the batteries (ask for this) and tweak anything that requires it. If you have ever crashed the RX, send it along too. They can also match them to each other even better that way. Check their web site for cost estimates if I remember correctly. Send now and it will be back when you are ready for it. Small price for confidence. List ANY problems you may have noted at ANY time in the past. Makes it easier and keeps the labor time down.