yeah ive had a similiar problem with raidentech, although not related to the eagle 50 which i also own and hate constantly needing to replace parts.
basically ordered a few 3 channel helis from raidentech.. the shipping is ridiculously priced. they really should use fedex which charges 30% cheaper than ups....
on top of thier bad service. no reply.. one of my helis came with no TX ...
its a channel rtf pixy and i ordered 2 one had a tx one didn't. i contacted them finally and they said what freq is it and they will send it out.. after giving them all my info and they said they would send it to me.. its been two months already and no TX in the mail. they keep repeating themselves like a robot answering machine when i send email, so screw them they get a bad buisness rating and have been reported to the better business bureau

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