Hi, i've just joined, I ride my much treasured 504 and have a question for you Experts, my bike came from the states and I restored her and she drives great. She is a KO 1971 model August 71. OK my speedo clock has only a mileometer on it,it doesn't have the trip miles.in other words there is only one reading on the clock as opposedto others which have two,can anyone know the reason for this? Is it maybe because it's a first production run and they changed later? Engine number starts at 10000-. Any ideas guys.?