Yes , the sprocket got here pretty quick. Many thanks GreenJoe! I'm glad you're going to start work on your Ninzuki.
I filled the tank today and the result was 59.3 mpg. Disappointing. I may do one more fillup to get a better perspective on the aero mods. I added a bit longer tail and some panels over the rear wheel.
Once I get the sprockets on I should see some significant gains.
all the best L& S