They rust and crack everywhere and flog out holes, alot to do with slack maintainance/care....very cool bike and I cant wait till my ones finished. They have a very light frame, heeps of gusseting, tippical shit japanesse welding from the era. Also, because there fairly rare, not alot of parts around...then and now....but if you have time to wait the bits do appear. Simo, TMBill in NZ has the biggest collection of A5 parts and bikes in the world....pm him.