Well after getting the 78's head back together...I was getting a little bored tonight. So I decided to go after my slow reading tachometer. I had hoped that the speedometer and tachometer on our S4 Spiders had the same type of adjustment screws as seen in the Milanos. Well....the short of it....they do! Hot diggidy Dam! as we say in KY. So here comes the skinny on both!