I think this thread needs to become active again. Personally I have owned the following: Quincy KG-4, Quincy Flathead A, Alky Hot Rod A, Konig HRA, Konig FA, Konig VA, the last piston port Yamato 250 imported into the USA, and currently have two MSR 250 Kawasaki's, and I still have the FA and wish I had all the rest.