The cable that runs from the binicle to the transmission came loose where it was attached to the transmission with a clamp that rusted and came loose this fall when I was testing the forward/reverse. Where can I buy a replacement for this clamp? It's a Hurth transmission that has an L shaped bracket that the cable is attached to with the clamp. I'd also appreciate any tips on adjusting the cable so that I can be confident that I will be able to shift into forward and reverse.