Make it work, then laff at them, It's what I did.
Best revenge there is.
Depending on what you paid for the bike, you might consider finding out what shipping would be for sending the transmission to Ann Arbor-area Michigan and back.
For damn sure I could fix that puppy, so if it's worth the shipping back and forth (cause I wouldn't charge ya) you might think about it.
But then, I dunno what ya paid for the 'ped to begin with.