Just call kenwood and get part number and order it. Just look for the part in the service manual below.
http://www.ko4bb.com/Manuals/Kenwood/Kenwood_TM733.pdf
Do some Google searches for parts suppliers in Europe. I have found rare and obscure Kenwood parts from a company in Germany.
I'll try to dig the URL up. They have English speakers in their order department and have helped me on a few occasions. Costs a little more, but if you want it....