HI! I just bought an old(to me) bike. It's a Joponen. That's what the frame says. I was told it was made in Finland about 1978. I have only found 2 pictures of these bikes on the web. Anyway, I just wanted to know if anyone knows of a place I can get 14X1 3/8" tubes/tires. If anyone has any information on these bikes please let me know. THANKS FOR YOUR HELP!