RE: flying in rain ??
I've flown in reain, snow , sleet, freezing rain, fog...... If you can take it, your model can.
That TX that failed for a bit: Send it in for service NOW! you have some sort of intermittant failure and it will come back to bite you. If it was shorted by water enough to quit working... it wouldn't have recovered on its own, it would have needed parts.