Does anyone know where I can find some inner tubes for a restro job I'm doing. I will list the sizes 12.0/25-15. 15.0/25.0-15. 13.0/26.0-15. 17.0/28.0/15. I would appreciate it if you could give me some leads and I prefer new tubes with short valve stems......thanks. Jim. @. 978-973-6422. Ipswich ma.