Lionel 6-12782 Lift Bridge

Thanks for the help but you are referring to the 6-14167 lift bridge.  Lionel made one in 1991 which was the large grey one numbered 6-12782.  That is the lift bridge I was referring to. 

What appears to be wrong is that the drive gear between the motor and the drive spools of string, is a nylon gear on one end and a brass gear on the other.  The nylon gear gets chewed up if misaligned when taken apart and re-assembled.  Obviously this was a used bridge, not new as described on Ebay, and that nylon gear is worn and concave shaped and will not mesh properly therefore the motor spins and does not turn the spools that raise the bridge.  I checked with Brasseurs trains and they are out of the part.  Lionel was sending their bridge repairs to them.  SO... I am looking for that gear like a needle in a haystack.  Anyone out there who can help me would be greatly appreciated.  Thanks in advance.

The bridge was originally made in Korea by Samhongsa. At that time Mike Wolf had a business relationship with Lionel and he acted as the sponsor for its production. This relationship slowly deteriorated such that by 1994 Mike was introducing his own line of trains in the now familiar purple MTH boxes. A call to MTH is a long shot but worth a try.