I am showing a steady 5200 rpm at an indicated 70 mph on my 83 model. The bike was bought about 4th hand and I am not sure what the stock gearing ratios are. It almost feels like I am running one tooth lower on the countershaft sprocket. Does anyone have the stock specs handy? The bike works great in town but felt a little short going to and coming from Laguna Seca this past weekend........