I worked out the RPM's for 27" tall tires, 71 MPH, 2.93 gears, and the trans being in 2nd gear, and it comes out to 3800 RPM. Sure sounds like it is stuck in 2nd.......Is there a definite drop in RPM's of over 30% when it makes what you think is the 2-3 shift? Have a tach?
